Features & Benefits

Sound & Other Qualities

• A true audiophile tube amplifier adapted for mobile use.
• Purpose: Absolute sound quality, utmost reliability.
• Made in USA with top quality everything.
• Patented design. Esoteric pedigree.
• 10 tubes, 100% tube signal path.
• Parts chosen for sound quality not price.
• 10+ year tube lifetimes. Proven stable, durable, road-worthy.
• Only all-tube car amp made and sold worldwide since 1986.
• Numerous glowing reviews. Proven over decades of time.
• Every imaginable problem solved long ago.
  Not microphonic. Runs cool. Lasts. Sounds great.
• No audible microphonics (noise from vibration).
• Practically inaudible noise, even on sensitive horns.
• Latest evolution of basic design in production for 38+ years.
• Earlier models are fully supported and may be upgraded.

Power Supply, Consumption

• Advanced, ultrasonically regulated power supply.
• Enormous energy reserves: 100+ joules energy internal.
• Reduced idling current and heat vs typical tube amp.
• No special requirements beyond any typical car amp.
• Remote turn-on current draw ~20 mA.
• Power consumption: 5A idle; 20A full power
• Undervoltage lockout when supply below 10.5 Volts.
• Chassis fuse in negative line. Internal power filtering.

Inputs

• "Tiffany" Gold/Teflon RCA jacks. Teflon wiring.
• Bourns potentiometer, 100 k Ohm impedance.
• Input accepts input signal 500 mV - 10 V rms.

Outputs

• 30 watts, 2 channels. Sustains full-power direct shorts.
• Selectable output impedance: 16, 8, 4, 2, 1, 1/2 Ohm
• Teflon/Copper Kimber Kable.
• Channels may be "paralleled" to double total output power.
• Output (and power) connectors are large #10 barrier strips.
• Frequency response: 20Hz -- 20kHz -3dB
• Hum & noise: -90dB from 20Hz -- 20kHz (unweighted)

Mounting & Temperature

• Size and weight: 4.5 in. H x 18 in. W x 6.75 in. D; 25 lbs.
• Neoprene "well-nuts" are provided for mounting.
• Can be mounted in all but the upside-down position.
• Heat limiter shuts the amp down at about 100degC.
• Sturdy, aircraft-aluminum chassis dissipates heat.

FAQ

People often ask, how does the BaM-235ab compare, in terms of sound quality and loudness, to a transistor amp?

From Tubes vs Transistors - Perception of Loudness, Clarity, Distortion, Sound Quality: General perception holds that a tube amp can sound two- to four-times louder than a transistor amp of equal power. Since 10x measured power is required to give a doubling of perceived power », the 60 Watt tube BaM 'sounds at least about as loud as' a 600 Watt transistor amp... This is entirely consistent with Earl Zausmer's famous competition car », which uses two BaM amps (about 120 tube Watts) and 1,200 Watts of (transistorized amp) power on the subwoofers.

What's the difference between the latest BaM-235ab and the older BaM-235 and BaM-230?

The BaM-235ab offers several substantial improvements, including auto-bias, better construction, and greater energy storage. The BaM-235ab supercedes both the BaM-235 and the original BaM-230. Upgrades are available.

What's the rating?

30 Watts per channel, 20 Hz -- 20 kHz, -3 dB, 3% THD Some owners have reported that the BaM-235ab's "30 tube Watts sound much more powerful" than comparably-powered amps. This is often attributed to the soft-clipping nature inherent in its design. Unlike transistorized amps which smack and crackle with abrupt distortion, the BaM-235ab exhibits graceful, smooth overdrive into clipping.

What's the difference between 30, 300 and 3,000 watts?

300 watts sounds only twice as loud as 30 watts.
30 watts sounds only 1/4th as loud as 3,000 watts.

Hearing is a non-linear, biological/psychological process. It takes ten times the power to sound twice as loud, and that's if everything else scales properly. Wattage rating without sensitivity is meaningless. With an adequately efficient speaker, it is possible for 1 watt to overpower any listener.

How much current does it draw?

5 amperes at idle, which is about the equivalent of one headlight; 20 amps at full power; the power supply current-limits at 25 amps.

More detail (2018), regarding the question of nearby battery or farad cap: The power supply limits to 25 amperes draw under extreme test condition. The amp idles at about 5A, approximately equivalent to one headlight. Casual listening will cause current draw in averaged bursts to rarely exceed 10A peak. Top performance music will usually not draw over 15A bursts and never over 20A. A battery nearby would slightly reduce voltage drop and thus extend playing time on a single battery charge. We've run one BaM on a standard Sears DieHard battery for about seven hours in hotel rooms (at normal listening/audition levels) for demonstration before recharging the battery. Some enthusiasts have installed farad supply capacitors near the amp and that works well, although there is no audible improvement (because the regulated power supply is a negative-resistance, drawing more current to compensate for lowering voltage, to maintain equivalent power). Therefore, given choice between nearby battery and capacitor, we'd use a farad cap and leave the battery stock lead-acid or use Optima/gel: Because many transistorized amplifiers, which are sometimes also installed nearby (usually for bass or auxilliary channels/rear/fill) often lack adequate internal energy storage or power regulation, the farad cap often audibly improves their performance.

How often do the tubes need to be changed?

"Need" is subjective. Some owners may elect to change tubes yearly -- though we don't know of one who does so; meanwhile, quite a few owners mention tube lifetimes exceeding ten years or more. The tubes are operated conservatively and enjoy correspondingly long useable lifetimes: operating the tubes for ten years or more is not uncommon.

What about other "tube" car amps?

In production since 1986, the BaM-235ab uses only tubes to perform all audio amplification. Recent "tube" car amps are mostly transistorized. See Truth In Car Amp Designs for technical comparison of schematics, patents, etc.

What's the design history?

The BaM-235ab incorporates audio circuitry that has been used in high-end home tube audio equipment for decades. It is the mobile version of a high-end home amplifier which was J. Gordon Holt's (Stereophile Magazine) reference amplifier for several years. In continuous production for over 38 years, we know of no other similarly pedigreed or proven car audio anything.

What about microphonics...in a car, with all the vibration?

Microphonics are inaudible / non-existent in the BaM-235ab. You can violently shake and jar the amplifier yet not hear a single hint of microphonics. In fact, people often notice the absolute quietness of the BaM-235ab. Even on sensitive horns, hiss or noise is practically inaudible.

How long does it take to warm up and play?

Under 30 seconds normally, and up to 60 seconds in sub-freezing temperatures.

How about heat?

The BaM-235ab mounts in the trunk with no heat problem at all. The chassis is its own heat sink. Some clearance is required for air flow, and mounting upside-down should be avoided. The BaM-235ab has a thermal cut-off that will power down the amp if necessary.

Don't miss this

Some years ago we wrote this article that was published in a now defunct car audio magazine.

Press Release

For immediate release:

Germantown, MD, June, 2005, Milbert Amplifiers introduces its BaM-235ab car tube amp, the evolutionary third model in its 20-year-old line of automotive vacuum tube amplifiers, which offers several improvements including patent-pending "auto-plasma-bias" (TM) circuitry which Milbert claims adapts to music levels and maintains proper bias at all times while also automatically compensating for tube aging and obviating any need for using matched tubes or manual tube bias adjustments.

According to Milbert, other improvements in the BaM-235ab include radio-frequency layout and design techniques, additional energy storage, adjustable feedback, adjustable grounding, and "above-mil-spec" circuitboard material that is thicker, able to sustain higher temperatures and carry more current than standard "glass-epoxy." Christopher Milbert explains, "it's like a car made out of better metal, and it improves everything."

"BaM car tube amps have always been impervious to microphonic noise from vibration," continues Mr. Milbert, "and they also offer ten-year-plus tube lifetimes --practically unheard-of in home or studio, and definitely unique in the harsh car enviroment. With a high-end home audio pedigree and numerous strong reviews and industry awards, the BaM sound quality is renowned. Automatic Plasma Bias, adjustable feedback, adjustable grounding, improved layout and more energy storage --all of which provide real and audible benefit-- result from our ongoing honing and improvement of our classic tube car amp, now available in its third incarnation, the BaM-235ab."

Based largely upon its predecessors yet recently reviewed as "most certainly the Holy Grail of auto sound," the 30-watt-per-channel stereo BaM-235ab uses ten vacuum tubes, class-A input stages, an 100% all-tube audio signal path, and patented designs to eliminate microphonic noise from vibration and maximize sound quality.

Milbert Amplifiers has been building vacuum tube car audio equipment just outside of Washington, DC since 1986, with its single model car tube amp (in three consecutive versions) in continuous production for over 39 years. The BaM-235ab is available directly from http://milbert.com

BaM-235ab press releases appeared in 12volt News, Celebrity Car magazine, Enjoy The Music, 21 HiFi, and others as well as various sites and forums online.

Reviews

From The Robb Report Collection

Automotive Audio: Tubed Tunes on the Go
Jeff Dorgay 06/01/2005

Milbert BaM-235 Car Amplifier
Many of today's mobile audio magazines feature rock stars and athletes who have invested the equivalent of a sizable down payment for a second home in their automotive playback systems. Most of these offer multiple large amplifiers and gigantic woofers, capable of achieving earsplitting sound pressure levels. Unfortunately, when compared to even basic home hi-fi systems, they often fall woefully short in fidelity. However, there is an alternative approach. Maryland-based Milbert Amplifiers handbuilds vacuum tube-powered car audio amplifiers that are similar in approach to the best audio amplifiers designed for home use. Rumor has it that Eric Clapton has a pair of Milberts in one of his favorite cars.

Milbert's recent amplifier, the BaM-235, is an evolutionary design that steadily improved over 19 years. The stereo power amplifier, which is built to military specifications, generates 30 watts per channel and can be bridged to be a single-channel monaural amplifier capable of 60 watts. Just remove the cover to reveal the same high-quality components you would find inside an amplifier from Audio Research or Krell. Thanks to a new auto-biasing circuit, the output tubes will never need adjustment during their 10-year lifespan.

Skeptics might be wary of the durability of vacuum tubes when used in an automotive environment, but Michael Milbert assures that I could dropkick the BaM-235 while in operation without affecting performance. While I did not take this extreme, a drive on the most tortuous roads in my BMW equipped with aftermarket (i.e., stiff) sport suspension did not affect the system's performance in any way. Anyone installing a Milbert in a luxury car should have no worries at all.Because an amplifier designed with vacuum tubes has a much gentler distortion characteristic than a solid-state amplifier, such amps tend to sound louder -- per watt -- than transistor amplifiers. Don't be fooled by the modest power output figure of the BaM-235. With a pair of very accurate two-way speakers and a modest subwoofer, a system built around the Milbert will outperform one of those big multiamplifier systems. If musical accuracy is what you are seeking, the Milbert is most certainly the Holy Grail of auto sound.

...the Milbert BaM-235 carries a very high price per watt, but considering its sublime performance, it is one of the best buys in car audio today.

• Tone Audio Magazine "Can You Achieve High End Sound In A Car?" (#3 April, 2006, pp. 21-23)
  "...the best sounding car amplifier on the face of the earth."

BaM-235ab --Jeff Dorgay, Tone Audio
• The Robb Report Collection, "Great Machines," June, 2005
  "...Milbert is most certainly the Holy Grail..."
• The Absolute Sound magazine PDF
  "...Milbert...soundstage in the car is uncanny..."
• AutoStylin magazine PDF
  "Nothing can beat this amp."
• Car Audio and Electronics magazine PDF
  "...Milbert tube amp...you just can't beat the sound..."
• Car Stereo Review magazine PDF
  "...Milbert...is unlike all other car power amplifiers..."
• International Audio Review PDF
  "...the Milbert won..."
• Soundslike magazine PDF
  "...simply more pleasant to listen to..."
• BaM amplifiers appear in numerous magazines, newspapers and publications, some of which are listed on our page about Earl Zausmer's BMWs.
  

Review Quotes

" ... a 30-watt tube car amp?
Are they out of their minds!?
Maybe not. Read on. "

"...Most car stereos, in my opinion, aren't worth the effort necessary to steal them, let alone earn the money to pay for them. Exceptions to the rule do exist, of course, the Milbert being one of them...In fact, it's sooo good that it clearly outstrips the rest of my system...The Milbert, for all intents and purposes, sonically disappears. Tapes I made of favorite recordings were simply more pleasant to listen to, and more accurately reproduced..."
Jeff Goggin, SoundsLike, vol. 1, #3

---

"...The sound of this amplifier is exceptional, far beyond anything I expected from a state-of-the-art car stereo. How can I describe the sound? With shrieks and tears and screams. More specific? If you insist. This is the sound of a truly High-End living room tube amplifier. The midrange is silky and sweet, the highs are airy and harshless (mmm, a new word)...This amplifier really excels in delicacy, ambience retrieval, lack of distortion, speed, and, yes, the simulation of a soundstage...If I had to name one overarching strength of this amp, it is the reproduction of brass, which is reminiscent of old Carnegie Hall. The initial attack and metallic bite of the trumpets and trombones are there with remarkable clarity, together with the warm, burnished tone of the instrument and all the associated ambience...With the Milbert, the simulation of a soundstage in the car is uncanny. Percussion is another great strength...Rock music is incredible...I lost it with Janos Starker's Cello Suites on Mercury. The attack, the resonance of the wood, the air around the cello; I was sitting in my driveway in tears, listening to the nuances of this recording (what a sight for the neighbors!)..."
Robert Reina, Absolute Sound, vol. 13, #53

---

"...What this sucker does in a car can't be put into words. I am not exaggerating when I say this unit sounds so good that while sitting in my driveway, playing high-quality tapes...I was in tears. I am not exaggerating when I say that, when driving, the realism is so startling that it can dangerously distract your attention from the road..."
Robert Reina, Soundslike, vol. 1, #3

---

"...The tube sound qualities of the Milbert really do make an important musical difference, compared to solid state amps. Instruments sound sweeter and more liquid, in a musically correct way. Singers have a richer body to their voice, which gives their lyrics better projection. Music is simply more natural all around...The happiest part of the Milbert's performance is its adaptability to different kinds of music. On the best quality program materials, both classical and jazz, its clarity and musical naturalness shines forth as no solid state amp can. Then, on distorted program material, such as much rock music, the Milbert with all its power is actually more forgiving than are less revealing solid state amps. This sonic magic is in the best tradition of tube sound, and makes many rock albums far more pleasant to listen to..."
Peter Moncrieff, International Audio Review, #53

---

"...On the road, there was no mistaking that classic tube sound. It is indeed silky and luxurious...The tube sound of the BaM-230 is completely discernible and unmistakable...The BaM-230 successfully brings vacuum tube listening back to the automobile in style...The contemporary-tube audio design is first-rate, delivering sound that is comparable to any home tube power amplifier..."
Ken Pohlmann, Car Stereo Review, Sep./Oct. 1988

Decades of Glowing Feedback

“ Your amp has followed me through three cars, and it's still going strong. Outstanding! ” -- Jessie Ketchun, KY

“ I'd been a little concerned about the power; I didn't think two channels at 30 watts would be enough. But, it's actually much more than plenty. I have yet to hear it run out of steam, and that's after I've really been pushing it. ” -- Chris Lewis, musician, audio enthusiast, September 2006

“ I've been in car audio 15 years, and the best sounding cars I've ever heard had your amps. ” --Mark Liggett, autosound competitor

“Extraordinarily good, period. Absolute High End, yet even better; however, we just can not award more than 100 of 100 points for musicality.” -- Car & HiFi Magazine [German], Jan 1999, pp. 10+

“ I'm now on my fourth car, but I've kept my BaM-230 all along. ” --Linda T., Gaithersburg, MD

“ Have early model BaM-230 amp, from 1987. Enjoy daily. Never one problem. ” --Marc Smith, New York

“ The [Milbert] tube sound is ... unmistakable. ” -- Ken Pohlmann, Car Stereo Review Magazine

“ We heard a deep, clear sound that retained all of the bass of the original signal. ” -- AutoStylin Magazine

“ The sound of [Milbert] is exceptional, far beyond anything I expected ... ” -- Robert Reina, The Absolute Sound Magazine

“ ...with your amp, the system sounds scary-amazing, just frightening. ” -- Chris Lewis, musician, audio enthusiast, September 2006

“ Milbert is the car amp not just worth buying but worth keeping. ” -- Kimberly M., Columbia, MD, December, 2004

“ ... phenomenal, it sounds unreal ... we were blown away, just astounded ... ” --Larry Chijner, autosound competitor

“ ... favorite recordings were simply more pleasant to listen to, and more accurately reproduced ... ” --Jeff Goggin, Soundslike Magazine

“ ... Most car stereos, in my opinion, aren't worth the effort necessary to steal them, let alone earn the money to pay for them. Exceptions to the rule do exist, of course, the Milbert being one of them ... ” --Jeff Goggin, Soundslike Magazine

“ If musical accuracy is what you are seeking, the Milbert is most certainly the Holy Grail of auto sound. ” -- Jeff Dorgay, The Robb Report Collections Magazine, June, 2005

“ I've had one of your amps in my 88 635 for over 13 years. It has worked great. ” -- Chris R., San Francisco, October, 2004

“ The car was totalled ... the only thing that still worked was the Milbert amp. ” --Yank Price, Venice, CA

“ The crystal-clear signal made sirens and horns sound like they were really there ... ” -- AutoStylin Magazine

“ The Milbert exhibits startling, lively sound quality --is higher praise possible? ” --Dennis Ketterer, Emmy award winning on-air personality & audio enthusiast

“ This amp is a masterpiece. ” --Susannah M., Rome, Italy

“ The attack, the resonance ... the air ... I was sitting in my driveway in tears. ” -- Robert Reina, The Absolute Sound Magazine

“With [Milbert] tube amplification, fullrange-speakers and the sub up front in the dash board, this car audio system carries you off to the 7th sound-heaven.” -- Car & HiFi Magazine [German], Jan 1999, pp. 10+

“ Milbert ... that is what it's supposed to sound like. ” -- Dennis Ketterer, Emmy Award winning television personality & voice-over artist, September, 2003

“ The electrical behavior of tube audio circuitry is fundamentally unlike that of solid-state circuits performing the same functions. ” --Keyboard Museum

“ Music is simply more natural all around. ” --Peter Moncrieff, International Audio Review

“ Ah, so this is what it was supposed to sound like. It sounds better than the studio. ” -- Chris Lewis' friend, studio recording artist, September 2006

“ ... brought a truly live experience to music ... ” --AutoStylin Magazine

“ The Milbert won. ” --Peter Moncrieff, International Audio Review

“ ... there was an immediate night-and-day difference between the BaM and all other amps we tried ... ” --Mark Liggett, autosound competitor

“ Think of it as sparkplug for your car audio system. ” --Fred Glock, Audiophile, Drummer

“ A woman's voice in a recording you've heard many times can suddenly make the hairs on the back of your neck stand on end. That's the kind of resolution, detail and emotional impact the BaM-235 routinely delivers. ” --Jeffrey Fleming, autosound enthusiast

“Your amp has served very well in two cars (and one five-car pile-up) since the early nineties. It still sounds great.” --Mark Christopher, 15 May 2008

“ This is the sound of a truly High-End living room tube amplifier. ” --Robert Reina, The Absolute Sound Magazine

“ ... it sounds like the musicians are right there. ” --Earl Zausmer

“ Congratulations, once again, on an amp that 'has stood the test of time!' ” -- Jeffrey S., Austin, TX

“ ...the best sound possible in a car. ” -- Car Audio & Electronics Magazine

“ The ultimate listening machine. ” --Time Digital Magazine

“ There's Milbert, and then there's everything else. ” -- Earl Zausmer

“ Nothing can beat this amp. ” -- AutoStylin Magazine, 2005

“ You gotta have the Milberts; that's what made that car. ” -- Earl Zausmer, IASCA champion

“ While numbers measure only certain parts, people hear and feel the whole of the music, tapping their feet and turning it up when there's groove, or changing the cut or fleeing if there isn't. ” --Anja K. 2006

“ I beat them up. I listened to them loud. Temperature swings; we took them [in the car] on ski trips every year. Driving up mountains. I live in a desert climate, so hot every summer. Never any problem; never any issues. The amps [performance and sound quality] never degraded. You build some bullet-proof stuff. Keep it up. ” -- Chris Meisner, RE two BaM-235ab amplifiers strapped on midranges, 24 Feb 2024

' I have heard a Milbert BaM-235 ... For what it's worth, it was the best car sound system i have ever heard in my life, and by a pretty large margin, too. ' -- blackreplica on carsound.com forums, 30 Jun 2004

“ It sounds so natural and warm and involving and silky and real. ” -- Dale Fontenot

“ ... design is first-rate ... comparable to any home tube power amplifier ... ” -- Ken Pohlmann, Car Stereo Review Magazine

“ You could spend days reading, years studying, or a lifetime arguing all this tube versus transistor stuff, or you could just shut up and listen and hear it for yourself in a few glorious moments. ” -- Dennis Ketterer, Emmy award winning on-air personality, concert cellist, audio enthusiast

“ The Milbert ... is unlike all other car power amplifiers ... ” -- Ken Pohlmann, Car Stereo Review Magazine

“ With the Milbert ... soundstage in the car is uncanny. ” -- Robert Reina, The Absolute Sound Magazine

“ If you thrive on emotion and want it reproduced in your car you need Milbert. ” -- Kate Revelle, screen actress

“ Milbert is the definition of high-end audio in the car. ” --Earl Zausmer

“ Its clarity and musical naturalness shines forth as no solid state amp can. ” --Peter Moncrieff, International Audio Review

“ ... [Milbert] brings vacuum tube listening back to the automobile in style ... ” -- Ken Pohlmann, Car Stereo Review Magazine

“It sounds detailed, brilliant...smooth. The list could be longer. But to be honest: The system plays with a fascinating precision through all frequency ranges, every smallest detail is presented accurately. ... Extraordinarily good, period. Absolute High End, yet even better; however, we just can not award more than 100 of 100 points for musicality.” -- Car & HiFi Magazine [German], Jan 1999, pp. 10+

“ It's nothing to do with audio snobbery mate, valves do make a difference. ” --Ben, UK, online

“ Its incredible sound jumps out at you from a black background of silence. ” -- Earl Zausmer

“ It is indeed silky and luxurious ... ” -- Ken Pohlmann, Car Stereo Review Magazine

“ I didn't know things this good were possible ... until I heard your car amp in my studio. ” --Paul Lipscomb, EVO Records

I could “ ... listen to it for days upon days as long as I live without any fatigue... ” -- "drosen145," online audio forum, July, 2002

“ The sound ... simply leaves transistor based audio equipment in the dust. ” --AutoStylin Magazine

“ What this sucker does in a car can't be put into words. ” -- Robert Reina, Soundslike Magazine

“ The midrange is silky and sweet, the highs are airy and harshless (mmm, a new word)... ” --Robert Reina, The Absolute Sound Magazine

“It sounds detailed, brilliant, homogenous, smooth. The list could be longer. But to be honest: The system plays with a fascinating precision through all frequency ranges, every smallest detail is presented accurately.” -- Car & HiFi Magazine [German], Jan 1999, pp. 10+

“ This sonic magic ... makes many rock albums far more pleasant ... ” --Peter Moncrieff, International Audio Review

“ ... sweeter and more liquid, in a musically correct way. ” --Peter Moncrieff, International Audio Review

“ I am not exaggerating ... the realism is so startling ... ” -- Robert Reina, Soundslike Magazine

“ How can I describe the sound? With shrieks and tears and screams. ” -- Robert Reina, The Absolute Sound Magazine

“ ... if you're serious about car audio, or you have a showcar that needs something special, you need look no further than this amp! ” --AutoStylin Magazine

“ ... this unit sounds so good ... I was in tears. ” --Robert Reina, Soundslike Magazine

“ Milbert makes a world champion amp. ” -- Earl Zausmer

“What can I say? If I sell this I'll be letting go of the absolutely best amp I have ever heard. And when I get another one I'll have to buy new because how many times do you see one of these for sale used? This amp is serial number A04071. This is the unit that was shipped to Jeff Dorgay of Tone Audio for the series of now famous reviews on the Milbert. Be assured that this amp received the very best care in parts selection and assembly before it was sent out to a reviewer for critical listening (although I do believe this is true of all Milbert products). The amp is like new and performs flawlessly. Have heard harmony vocals that I didn't even know were there before hearing this amp. They simply disappear into a haze when another amp is hooked up. Everything just sounds better. This is really one sweet sounding amp. Have the original box and packing materials.” »

“ Many loyal owners over decades of time, not to mention --what-- millions of musicians and audiophiles who prefer tubes? That just speaks for itself. ” -- Matt H., Germantown, Maryland

“You might want to look at milbert 235 as well. I use it on bumpy road in Bangkok for 17 years and it is still in working condition. Along the line I have gone through 1 set of tubes due to normal mantainance... I personally never heard anything better than milbert before not even Luxman, Mcintosh, or alpine F900. so for the $$$ milbert have the longest service life and the best sounding amp I ever own. Their might be something better on the market but I just haven't discover it yet.” --"golf_bht" 14 Aug 2005 link

“ The sound of this amplifier is fantastic. ” --Gennadiy, Moscow, Russia, April 2007

“ ...the best sounding car ever without doubt was Earl Zausmer's BMW 5 series...This car achieved dynamics and realism not touched by any other cars I have heard including my own. It was the most lifelike presentation of music in a vehicle I have experienced. ” --buff, audiogroupforum.com

“ [Milbert] really excels in delicacy, ambience retrieval, lack of distortion, speed, and ... soundstage. ” --Robert Reina, The Absolute Sound Magazine

“ This amp makes all songs end too soon. ” --Anja K.

“ This is the only car amp preferred by four out of five druglords worldwide. ” -- John Reel, audiophile

“ It's honestly too good. Now how often can you say that? ” -- Jeff Fleming, East Coast Autosound

“ The Milbert, for all intents and purposes, sonically disappears. ” --Jeff Goggin, Soundslike Magazine

“ The sound is unbelievably clear ... ” -- AutoStylin Magazine

“ Milbert sounds like the best thing for sound quality since live performance! ” -- Sean Snyder, audio enthusiast

“ Milbert is the definition of excellent sound. ” -- John Athayde, musician, film producer

“ In fact, it's sooo good that it clearly outstrips the rest of my system ... ” --Jeff Goggin, Soundslike Magazine

“I am an old [sound quality afficionado], I go back to when Earl was running your amps in his BMW, still the best sounding car of all time...” Bob N, Canada, 23 Apr 2008

“ ... a live performance would not have the clarity and deepness of the sound that comes out of this amplifier. ” --AutoStylin Magazine

“ Percussion is another great strength...Rock music is incredible ... ” --Robert Reina, The Absolute Sound Magazine

“ The Milbert sound, immediately, it's just a lot closer to "right." ” -- John Toth, U.S. Navy linguist, Seoul, S. Korea.