Stax DA-80 Class-A Stereo Power Amplifier
уникальный усилитель мощности, выполненный по схеме двойного моно,непосредственно,
2 блока усиления в одном корпусе с необычайно чистым и пластичным звучанием,
он имеет достаточную мощностью для работы с большинством АС и не требователен в их подборе.
для комплекта есть предварительный усилитель STAX CA-Y

Stereo power amplifier developed by adopting the latest amplifier design method, lowering the output power of DA - 300.
The DA - 80 has a configuration in which two monaural power amplifiers are grouped in one chassis, and the power supply part is also completely independent from the transformer.
In the circuit configuration, low-noise dual FET is used as the current mirror load in the first stage, and it is the all-stage A class circuit of the second stage cascade and the final stage Darlington pure complimentary system. Designed with emphasis on linearity, ignoring changes in tone caused by preamplifier output due to high input impedance.

Specifications

Power output: 45 watts per channel into 8Ω (stereo)

Frequency response: 3Hz to 500kHz

Total harmonic distortion: 0.005%

Damping factor: 600

Gain: 26.3 dB

Input sensitivity: 0.89V

Signal to noise ratio: 100dB

Speaker load impedance: 2Ω (minimum)

Semiconductors: 31 x transistors, 24 x diodes

Dimensions: 437 x 166 x 407mm

Power-supply voltage: 100 V / 117 V, ± 10%

Power consumption: 320 W

Weight: 19.5kg