Pioneer A-UK1

Commentary

A pre-main amplifier designed for low cost and vivid music expression.

In pursuit of simplicity and high quality, the signal path and circuit layout are thoroughly simplified by reducing attached functions as much as possible.

We use high-quality sound technology and parts for the parts that affect sound quality, and pursue pure amplification of music signals.

A wide-range linear circuit is used in the amplifier section, and the simple structure that can obtain the required gain in one stage ensures stable drive capability over a wide range.

By increasing the capacity of the power transformer in the power supply section, a powerful playback sound can be obtained. By making the secondary winding upside down, noise from the power supply is canceled out, and a playback sound with excellent S/N feeling can be obtained.

Silent microprocessor is used in the operation part.
The A-UK1 uses infrared remote control to enable volume Up down. The microprocessor and volume drive motor for this control are powered only by remote control operation, so there is no risk of sound quality or noise during music playback.

Wireless remote control is included.

Model Rating

Type	Pre-main amplifier
Maximum practical power	70W + 70W (EIAJ, 4 Ω)
Rated Output (Both channel drive)	40W + 40W (4 ohm, 20 hz to 20 khz, 0.1%) 35W + 35W (8 ω, 20 Hz-20 kHz, 0.07%)
Input Sensitivity / Impedance	Phono MM : 2.8mV/50k Ω CD, Tuner, Line, DAT/Tape1, Tape2, Monitor : 200mV/50k Ω
Phono maximum allowable input	Phono MM : 150 mV (1 kHz, 0.1%)
Output Level / Impedance	DAT/Tape1, Tape2, Monitor : 200mV/1k Ω
Frequency characteristic	Phono MM : 20 Hz to 20 kHz ± 0.5 dB CD, Tuner, Line, DAT/Tape1, Tape2, Monitor : 5 Hz to 100 kHz + 0 -3dB
Signal-to-noise ratio (IHF-A network Short circuit)	Phono MM:77dB(2.8mV) CD, Tuner, Line, DAT/Tape1, Tape2, Monitor : 105 dB
Speaker load impedance	4 Ω ~ 16 Ω
Power supply voltage	100 VAC, 50Hz/60Hz
Power consumption	100W (Electrical Appliance and Material Control Law)
External dimensions	Width 420x Height 110x Depth 310 mm
Weight	5.8kg
Attachment	Wireless Remote Control