[BassMojo]

Selling two (2) Cherry MEGAschino MKII mono block amps in perfect condition for $6,500 $5,000 $4,500. These are Tommy’s very best offering that he ever made and retailed for $8,500 each with the added upgrades. These each have the 1,500 watt linear transformers with quad capacitors. Additionally, I had Tommy design and make custom faceplates without the large rack-ears for a sleeker look and more compact form. These are by far the best 2Ch and home theater amps that I have ever heard. Lucious and powerful.

I have a third matching amp that I will include at no charge that recently had its fault light come on and stopped producing sound. I shipped this one amp to Brad at Precision Electronics for his evaluation and possible repair. He could not get the amp to replicate the fault, confirmed that there were no blown FETs or other parts and shipped it back. This one amp is still faulting. You can diagnose and fix, or keep it for possible parts. I am too busy to pursue the fix, but am confident in the amp because the condition that I maintain my gear. These amps were not supplied with power cords and are offered the same. They will be shipped in their original boxes.

DC coupling end-to-end response down to 0Hz and NO BASS PHASE SHIFT
Low output impedance across the entire audio band
We measure output impedance (or damping factor) at 100Hz, 1kHz, and 10kHz
Optimized for SONICS above all else
We start with amazing bench specs, like 128+dB SNR and 0.0008% THD+N, then we tweak for sound AFTER that
Black background, micro-dynamics, uncolored 120dB SNR, 0.001% THD+N
High power MEGAschino channel boards are capable of comfortably driving 1000W into 4Ω and up to 2000W into 2Ω
Extended bandwidth Up to 150kHz

Patented and proprietary circuitry designed in-house
We are one of the few amp manufacturers that still designs circuits as opposed to dropping yet another pre- fab module into a fancy box!
Experience; Over 30-years of Class-D amplifier design
The MK2 version! We improved power efficiency and reduced low power THD+N from 0.005% to 0.001%. Sound quality is even more supple at low volumes, yet the MEGA MK2 delivers dynamics that'll shake your soul.

We pride ourselves in a unique high-performance technology built with patented and proprietary circuits designed in house. Our technology doesn't require gobs of negative feedback as used in mass market pre-fab modules. Some say high-feedback amplifier designs are responsible for screechy highs and smeared imaging like the Class-AB amps of the 1980s. We also don't require complex compensation networks allowing much less output filtering for flat, extended response into difficult loads. Our extended response also allows better control at high frequencies. Other Class-D designs are adversely affected by speaker reactance, some so bad that capacitance on the output changes their operating frequency.

We design our hardware from scratch (down to the smallest component) to fit the product, and we design the entire product around our own circuits. Therefore, we don't need to make sonic sacrifices in order to fill as many "sockets" as possible. This allows us to reach new levels of performance on the bench, but more importantly, into your ears.

The MEGAschino is like (sonic wise) the well-regarded Maraschino with even more extended bandwidth and massive added headroom. The result is an elegant and luxurious sounding amplifier capable of driving just about any speaker on the planet, even the BIG power-hungry ones like Legacy Whisper, Tekton Double Impact, Magnepan 3.7i, big JTRs (210RT, 212RT, 215RT), etc.

Specs:
Gain: 25.6dB
SNR: 120dB
1W THD+N: 0.001%
Size: 14”.3 x 14.3" x 4.6"
Power Stage Efficiency: 95%
Output Impedance: <0.04Ω at 1kHz, <0.08Ω at 10kHz Sensitivity: 3.0Vin for 400W out into 8Ω
Weight: 40 lbs
Input Impedance: 20kΩ true balanced
Frequency Response: 0Hz to 150kHz (DC coupled)
Output Power: Mono Version: 850Wpc RMS into 4Ω, 460Wpc RMS into 8Ω
Protection: Thermal, Current, Voltage, Auto-Recovery
Output Connectors: WBT Gold Binding Posts
Input Connectors: Neutrik Gold XLR, (RCA-to-XLR adapters included)
Idle Power Consumption: 20W
Sleep Mode Power Consumption: 8W
AC MAINS: 120VAC nominal
Auto-Sleep: Amp sleeps after 8 minutes of no audio and wakes up when audio returns
Enclosure: Heavy Gauge Steel in Black Faceplate
Power Supply: Massive 1,500W Linear Transformer
Remote trigger: 2.5mm DC jack, 3V-12V
Ultra-High Sound Quality: Muscular and Graceful

[BassMojo]

For those who don’t know how special these amps are, many here do, let me provide some details. Tommy O’Brien Digital Amplifier Company (Cherry), who was very active on this site, was a true genius. He worked in amplifier design and implementation for over 30 years. Here’s from an interview that he did in 2017:

“When I was in grade school, I routinely disassembled various pieces of equipment, like cassette decks, preamps, and such, while he was at work, and put them back together before he returned home. As my father aged, he was able to buy some high-end gear, starting with a pair of Magnepan panel speakers. He bought Krell and other highly regarding amps, a Theta D/A, and various preamps such as Audio Research. He built some amps from scratch, designing them from discrete transistor circuits. He taught me how to bias a transistor before I became a teenager. We spent many hours discussing circuit design. In 6th grade, I made a cattle-prod circuit from a Radio Shack Electronics Kit. So you know, the kit was not designed to make such things. I convinced my math teacher to put her hand on the contacts, and I shocked her. She had me suspended from school and sent to "the van" where I was psychoanalyzed. They really did think I was a troubled child, almost electrocuting my math teacher. I laid low for a while after that, but kept building circuits, everything from radios to lighting displays.
I became very interested in computers at about 14, and my big birthday present was a Commodore VIC-20 computer. My father helped me design a box that filtered audio into bands (bandpass filters) and digitized the levels using the joystick port of my VIC-20. I wrote the software to convert the screen display into a spectrum analyzer, entered this in the science fair, and was the first freshman in the history of my school to win the science fair. Not just my category, but the entire fair! Also mixed into my teenage years was an affinity for voice synthesis. I built a system (hardware and software) to learn new words automatically and read paragraphs using allophone-based voice synthesis. I went on to build an image processing system using a Commodore 64 computer. My high school physics teacher provided a large monitor and a CCTV camera for my system. I built a wire-wrap board with more than 60 chips, designing every last gate of my video capture device. That was when I was 17. I won all kinds of awards for that, including the IEEE science fair project of the year.
Early in college, I was experimenting with conventional amplifier design (Class-A and Class-AB) in my dorm room. I had some borrowed equipment, like a scope, soldering iron, etc., and piles of parts scrapped from this and that. I started getting more and more into analog circuitry. At one point, I thought I might get into software, because I enjoyed programming very much, but mostly to drive custom hardware, but there's just something about analog. For a school project, I made a 1W Class-A audio amp, and I was shocked at how wonderful it sounded compared to the other student's amplifiers. I drove this really nice little sealed-box (Focal drivers) speaker I made (one of the pair, anyway), and it was louder than I imagined 1W would be. There was this older guy in my class that built a Class-D amp for the same assignment. It sounded like crap and self-destructed during the evaluation, but the concept intrigued me. An amplifier that uses transistors like digital switches. Pretty cool. So, I started designing a Class-D amp of my own.
I was then the lead engineer on a senior project team to develop a high quality Class-D audio amplifier. The three other members of the team were my good friends, all of us EE majors. We were successful and received an A for the project. This was a single channel amp putting out something like 40W. At one point, it melted a tweeter off the face of speaker, but eventually, it was stable and sounded pretty good. It was just the beginning.... I graduated Drexel University with an Electrical and Computer Engineering degree in 1992. My project team decided to attempt a commercially viable design, so we started a company, business cards and all. We asked Drexel to release any claims to the design since it was started as a school project, and they agreed. The company fizzled after a while. We were more into women and beer than anything else at the time, but eventually I told them I'd like to pursue the venture on my own. They were fine with that, and I partnered with another friend to build a high power prototype PWM amp. The amp was a success, and I formed Digital Amplifier Company (1996).”

The entire interview with in depth design specifics can be read here: https://positive-feedback.com/interviews/tommy-obrien-digital-amplifier-co/.

These MEGAschino mono amps were designed for high performance on the bench, but more importantly for ultimate sonic satisfaction. They easily sound as good as Class A amps in their emotional musical reproduction, detail, soundstage depth & width, extremely low (inaudible) distortion & noise floor and crazy power that can drive any speakers full range such as JTR 215RTs with ease. There will never be amps like these made again. These will most likely be the last amps you ever own. I already know that I have priced these far too low and have been encouraged to reprice higher. I’m considering a reprice higher.

[BassMojo]

Price drop to $5,000.

[BassMojo]

Price drop to $4,500.