Audio Database


This is a bulb-tube type stereo power amplifier designed using reliable parts along with the progress of modern electronics while taking full advantage of the characteristics of vacuum tubes.

The circuit structure is NFB by Mulard type phase inversion and UL connection. It is based on the reliable orthodox circuit which demonstrates the advantage of 6CA7, and the circuit which causes distrust in unstable long-term use is eliminated as much as possible.

A rectifier tube is used to protect the power tube from the rush current when the AC power is turned on, while maintaining the sound quality of the vacuum tube.
In addition, 5AR4 is connected in parallel so that it can withstand large currents.

Printed circuit boards, which affect sound, are eliminated, and all of them are hooked up to terminals for manual wiring.

The CD direct connection terminal is mounted on the front panel.
This terminal can be directly connected to the first stage tube.

Model Rating
Type Stereo power amplifier
Effective power 36W + 36W (8 Ω)
Total harmonic distortion factor 0.1% or Less (1 kHz, 1W)
1.0% or Less (1 kHz, 36W)
Frequency characteristic 20 Hz ~ 20 kHz ± 1 dB (36W)
Input sensitivity 1V
Impedance 100k Ω
Signal-to-noise ratio 100 dB (IHF-A, input short)
Load impedance 4 Ω, 8 Ω
Vacuum tube used 6CA7x4
Accessory function Input 2-system switching SW
Power supply voltage 100 VAC, 50Hz/60Hz
Power consumption Approx. 250W (Electrical Appliance and Material Control Law)
External dimensions Width 368x Height 298x Depth 231 mm
Weight 22kg