The MA-3 is the culmination of a massive project we began in 1998 at the behest of one of our customers. It was 7 years in design, with 15 different chassis and 12 different circuit concept explorations. The goal: to build the largest OTL amplifier the world has ever seen, while at the same time retaining the qualities our amps have made famous. The end result is arguably the the best amplifier in the world.
There is clearly a need for such an amplifier that can make serious power while being completely transparent and musical; fortunately our OTL technology is well-suited to the task. Since we are not limited by issues that plague conventional amplifier designs, the MA-3 retains a wide bandwidth and low distortion simultaneouly. No transformer-coupled amplifier can produce 200, yet alone 400 watts and get it right at every audio frequency; yet the MA-3 makes 500 watts easily, without electronic artifacts. It's high-power amplifier that is fast and truly musical!
500 watts per channel, 2-16Ω load before clipping
Input Impedance: 100 KΩ single-ended, 200 KΩ balanced
selectable to 600 ohms
2.5 V sensitivity
RCA and XLR true balanced differential input
(per channel) 42 x 6AS7G output tube
12 x 6SN7 driver tube
1-100KHz within ½ dB
600 V/µs
(per chassis) 152 lbs ( 68.9 kg )
(per chassis) 80 lbs (36.3 kg)
(per chassis) 31.5" deep x 21" wide x 15" tall (80 x 53 x 38 cm)
by Atma Sphere
The MA-3 is the culmination of a massive project we began in 1998 at the behest of one of our customers. It was 7 years in design, with 15 different chassis and 12 different circuit concept explorations. The goal: to build the largest OTL amplifier the world has ever seen, while at the same time retaining the qualities our amps have made famous. The end result is arguably the the best amplifier in the world.
There is clearly a need for such an amplifier that can make serious power while being completely transparent and musical; fortunately our OTL technology is well-suited to the task. Since we are not limited by issues that plague conventional amplifier designs, the MA-3 retains a wide bandwidth and low distortion simultaneouly. No transformer-coupled amplifier can produce 200, yet alone 400 watts and get it right at every audio frequency; yet the MA-3 makes 500 watts easily, without electronic artifacts. It's high-power amplifier that is fast and truly musical!
500 watts per channel, 2-16Ω load before clipping
Input Impedance: 100 KΩ single-ended, 200 KΩ balanced
selectable to 600 ohms
2.5 V sensitivity
RCA and XLR true balanced differential input
(per channel) 42 x 6AS7G output tube
12 x 6SN7 driver tube
1-100KHz within ½ dB
600 V/µs
(per chassis) 152 lbs ( 68.9 kg )
(per chassis) 80 lbs (36.3 kg)
(per chassis) 31.5" deep x 21" wide x 15" tall (80 x 53 x 38 cm)
