Audio Database


This pre-main amplifier inherits the design philosophy of the PM-14SA and PM-17SA and is compatible with next-generation audio.

The DVD input supports a 6-channel input, and you can add a power amplifier to play SACD, DVD Audio, and other multi-channel sources.

A pre-power independent configuration is adopted to achieve high sound quality.

A newly developed current feedback type is used for all six channels in the preamplifier section to achieve low-noise, high-slew rate, high speed and dynamic range for next-generation audio.

The volume uses a motor-driven 6-series volume of die cast frame, which has less channel-to-channel deviation than conventional volumes and higher performance than electronic volumes.

The power amplifier section uses a current feedback type. By lowering the feedback impedance, the phase compensation is light and a high-speed amplifier is realized.
Power devices use L, A, P, and T transistors with excellent high-frequency characteristics, and separate left and right heat sinks to reduce vibration and thermal crosstalk.

The power supply section uses a super-ring-core toroidal transformer and a high-speed, low-loss, low-noise Schottky barrier rectifier.

The speaker terminal uses the latest model of the standard SA series pre-main amplifier made by WBT in Germany, and supports banana plug and Y lug.

The chassis is a double-layered chassis with an additional 1.6 mm thick steel bottom plate to reduce the impact of external vibration on sound quality and improve chassis strength.

Equipped with a CD & DVD direct input that is directly connected to the preamplifier section by a dedicated relay.

Equipped with a full Rec selector with Rec buffer.

The input / output terminals are gold-plated.

An inlet type AC cable is used.

Model Rating
Type Stereo pre-main amplifier
Rated Output (20 Hz to 20 kHz, Both Channel Drive) 90W + 90W (4 Ω)
75W + 75W (6 Ω)
60W + 60W (8 Ω)
Total harmonic distortion factor (20 Hz to 20 kHz, both channel drives) 0.01% (at 8 Ω load)
Intermodulation Distortion Factor (SMPTE) 0.01%
Output Bandwidth (8 ohm load, 0.04%) 10 Hz to 50 kHz
Frequency Response (CD, Source Direct) 5 Hz ~ 70 kHz + 0 -1dB
Damping factor (20 Hz to 20 kHz) 100 (8 Ω Load)
Input Sensitivity / Impedance Phono MM : 2.4mV/47k Ω
High Level : 210mV/25k Ω
Signal-to-noise ratio (IHF A network, input short) Phono MM:85dB
High Level:110dB
Tone control Bass : ± 8 dB (100 Hz)
Treble : ± 8 dB (10 kHz)
Power supply voltage 100 VAC, 50Hz/60Hz
Power consumption (Electrical Appliance and Material Control Law) 160W
Maximum external dimensions Width 440x Height 124x Depth 340 mm
Weight 9.0kg
Attachment System remote control
AC Cable