Buzz Audio MA2.2B
$2,735.00
Overview
True class A discrete stereo microphone amplifier, stepped Elma gain controls, standard unbalanced output.
A vintage mic preamp design that proved 20 years ago - "clean and fast does not need to sound clinical" - now with updated user interface and calibrated gain.
AVAILABLE IN SILVER/GREY or BLACK FINISHES
design features
So what is new in the MA2.2B:
- Functions are now controlled with illuminated push button switches with "clickless" operation, no more thumps on the output.
- The gain pot has been replaced with a calibrated 24 position Elma switch for accurate stereo matching between channels.
- We have added a useful 19 segment peak output level meter.
- But, the original audio and power supply design of the MA-2.2 has been retained.
buzz audio heritage
Designed to provide transparent amplification to reveal the true source, they do not come any better than this. If you wish to record your sounds with the utmost warmth and clarity possible, you have found the tool for the job. And it's not just us blowing our trumpet here, it's what hundreds of users have told us over the years since we began building the very first MA-2 back in 1993, (re-vamped as the MA2.2 in 1999). The MA2.2B is a very high end product designed without low price as a primary goal, so it is an investment for sure. However, the high standard of workmanship and meticulously engineered construction means it will last a life time - something our users who purchased 20 years ago now experience.
audio path quality
The circuitry used in the MA-2.2B preamp was developed by Buzz Audio designer Tim Farrant in the 1990's and was dubbed "True Class A". The resulting BE40 series of amplifiers exhibit very wide frequency response (into the mega-hertz ) and ultra fast slew rates (140V/uS) even at 60dB of gain. These attributes, plus the inherently low distortion provide the exceptionally pure top end sound of the MA-2.2B. In addition, the over engineered power supply design with localized Class A regulators for each amplifier stage supplies the grunt needed for an authoritive and accurate bottom end - it sounds tight and never over blown. Instead of an input transformer we use a stack of Wima film capacitors and these do not exhibit the low frequency phase problems associated with transformers, and sound MUCH better than polarized capacitors found in competing high end products.
controls and functions
- GAIN dB - a 24 position Elma audio switch to set the gain of the preamp between +14 to +66dB.
- MUTE - when engaged, the audio output of the MA2.2B is switched off. On power up, the mute is always engaged to avoid thumps on the output.
- -20dB - when engaged, a 20dB resistive pad is inserted right at the input to cater for high input level signals.
- Ø REV - when engaged, the polarity or phase of the input signal is reversed 180 degrees.
- LO-Z - changes the mic input loading from 3k ohms to 1k ohms, which can change the overall tone of the connected microphone.
- 48V - when engaged 48V phantom power is supplied to the connected microphone. On power up it is always set to off to avoid disasters!
- POWER - A handy power on/off switch and associated power led, conveniently located on the front panel!
options
As standard the MA-2.2B has an unbalanced output, avoiding the extra stages required for the balanced function so as to keep the signal path as simple as possible. If you treat the output of the MA2.2B as balanced, you should have no problem with interconnection to other equipment. The unit can however be supplied or retrofitted with high spec Lundahl LL1517 output transformers. When the transformers are fitted, the direct unbalanced output is still available on the rear panel via a 1/4" jack socket. When fitted, the transformer add a bit more warmth to the sound. (We can also offer the Lundahl amorphous core LL1684 transformer to special order).
Pristine & Musical
Buzz Audio is a small boutique company in New Zealand. Its home is a modest building, about the size of a typical dentist’s office. Each product is hand assembled and inspected. Founder Tim Farrant is the hands-on supervisor. (All my e-mail queries to Buzz Audio were answered by Mr. Farrant.) The typical assembly time is two weeks, though unforeseen circumstances may stretch this to three weeks. Add another week for DHL shipping if you’re on the other side of the planet. Bottom line: don’t expect to have it within a week of your order. If you want it quickly, try to find a dealer who happens to have it in stock.
My shipment from New Zealand to the USA arrived safe and sound. It was double boxed, the interior box foam lined into which the preamp fit snugly. The preamp itself was enclosed in a clear plastic bag. With such careful packaging, it would withstand a fair bit of mishandling. Such attention to shipping details suggests that Buzz Audio has put its years of experience to good use. Further, my parcel (liberally festooned with “fragile” labels) showed no sign of having been tossed about during its global odyssey. DHL delivery often gets mixed reviews, but for me it worked out fine.
Inside the box you’ll find the preamp, power supply, and user manual. My shipment also included an extra pair of fuses for countries that operate on 220-240VAC. If you order directly from Buzz Audio, be sure to specify the country you’re in, and they’ll install the correct fuses. My order included a sheet of paper prominently assuring me that my preamp was set for 110-120VAC.
The nine page user manual is a quick and easy read. After all, the Buzz Audio 2.2B isn’t a complex beast to operate. The power switch is on the right side of the front panel (“where it should be” as the user manual confidently asserts). The Elma gain switches are detent calibrated in 2 or 3 dB increments, and are reassuringly solid. Output level for each channel is monitored via 19 LED lights. Five buttons per channel round out the front panel: mute, -20dB pad, polarity reverse, LO-Z impedance switch, and phantom power. The back panel has for each channel an XLR input, TRS line out, and XLR line out. It also has a signal ground switch. Unless you’re into constantly swapping cables, you may never again look at the back panel after hooking things up. The 2.2B is a minimalist’s dream. You power up, set gain, and then get on with making tracks.
The 2.2B outputs are unbalanced. This is a deliberate design choice—quoting from the user manual: “to avoid the extra amplifier stage required and maintain the shortest possible internal signal path.” To be honest, I’ve only a vague notion what this means. But I’m assured it has no effect on normal operation, and my own experience confirms it. For those who simply must have balanced outputs, the MA-2.2BTX model includes Lundahl transformers at a slightly higher price.
Because the 2.2B lacks dials and knobs for endlessly tweaking the sound, its sonic signature had better be damned good. It emphatically is. The sound is detailed, focused, and clear. (One listener, after hearing a recording I made, marveled: “It’s as if I were sitting in the room with you while you play.”) One expects this from a “straight wire with gain” design. But that doesn’t give this preamp its full due. The 2.2B, while uncolored and true to whatever you’re recording, also limns everything with a subtle yet pleasing burnish. Transients are sharp without hardness. Even ugly sounds are deftly transfigured. For example, my guitar, if played with insufficient care, can sound a mite plasticky in higher registers. Through the 2.2B, this undesirable trait is elegantly tamed. Mind you, when I make this bad sound, it’s still there. But the 2.2B puts a better face on it. Rather than an obviously bad sound, I instead hear another useable shade on the timbral palette. The 2.2B is more than just transparent—it’s musical. If this sounds like pollyannaish alchemy, so be it. But as a musician, I prize audio gear designed with a good ear.
The 2.2B isn’t cheap, but as quality preamps go, it isn’t prohibitively expensive either. The absence of bells and whistles keeps its cost below unobtainium territory. The price you pay for the 2.2B goes squarely into sound and durability. If these are your prime concerns, then this preamp is for you.
It’s fashionable in some quarters to downplay the importance of a preamp in audio recording. Any decent preamp, it’s occasionally argued, will do. Well, maybe. To my ears, however, the Buzz Audio 2.2B made an instant and noticeable improvement. It brought my holy grail search to a decisive and happy end, letting me get on with making music, secure in the knowledge that my gear won’t degrade the sound. There’s a trade-off, though. The pristine sound I’m now getting makes me a tad self-conscious when recording myself. Misplaying a note seems unforgivably blasphemous. So my profanity while running takes needs an upgrade.