COUNTERPOINT SA-12

Commentary

Hybrid concept stereo power amplifier using vacuum tube and MOS FET.

Vacuum tubes are used for drivers of all voltage amplification stages and output stages.
The vacuum tube front-end is coupled to the low-impedance / high-current MOS FET output stage to obtain the power response of the MOS FET while maintaining the characteristic sound of the vacuum tube amplifier.

The output stage does not constitute an NFB loop because the counter point does not recognize the performance improvement by NFB as a musical one.
The non-NFB circuit configuration, thorough grounding, and carefully designed power supply circuits enhance the capabilities of the SA-12.

An automatic muting mechanism by an automatic muting mechanism in case the DC part flows when the power is turned on, or if something happens to the AC power supply itself.

It is designed with the reliability of the amplifier as an important factor, and all circuits are realized by especially reliable parts such as metal film register made by Rodelstein, Germany.
This improves not only the physical characteristics but also the quality of music reproduction itself.

In addition to the black type, there is also a silver type.

Model Rating

Type	Hybrid stereo power amplifier
Effective power	140W (4 Ω) 80W (8 Ω)
Input impedance	47k Ω (at 100 pf)
Total harmonic distortion factor	1% or Less (80 Ω, Effective Output)
Frequency characteristic	5 Hz to 100 kHz
Signal-to-noise ratio	92 dB or more
Damping factor	8.9 (8 Ω, 1 kHz)
Gain	29dB
Vacuum tube used	6DJ8 (Twin triode) x4 pieces
Power consumption	60W
External dimensions	Width 480x Height 113x Depth 322 mm
Weight	15kg