YAMAHA CX-1

Commentary

In order to reproduce the beauty of music, this preamplifier pursues the basic amplifier of high S/N and low distortion rate.

The flat amplifier section uses a low-noise dual FET at the first stage, and the NFB circuit uses a capacitor that does not generate noise in principle to obtain pure playback sound for all input sources.
The volume is a 4-channel volume that can be adjusted before and after the flat amplifier. The noise level can be reduced by up to 16 dB when the volume is reduced and the volume is low, improving S/N in actual use.

A buffer amplifier is mounted immediately after all the input terminals to convert the input signal to low impedance to eliminate the influence of external noise.

Equipped with a pure direct switch that supports all input sources.
When the switch is turned ON, it bypasses the tone control and balance, passes through the input selector and volume volume, and is connected directly to the power amplifier, providing a simple and direct signal path.

Equipped with MM/MC-compatible phono equalizer amplifier.
Four low-noise complimentary service transistors are used in the MC head amplifier to realize S/N.
In addition, two RIAA elements are used for the MM amplifier to improve the accuracy.

We have developed and adopted a high-density vibration-proof base mixed with glass fiber for the insulator.
In addition, all parts are attached to the anti-vibration base to minimize the adverse effect of vibration.

It comes with a system remote control that allows you to operate a Yamaha RS-compatible source device such as a CD player.
In addition to power ON/OFF, volume and input switching operation, the MX-1 power supply can also be turned ON/OFF simultaneously by connecting the control terminal.

Model Rating

Type	Control amplifier
Input Sensitivity / Impedance	Phono MC : 100 μ V/1k, 220 Ω Phono MM : 2.5mV47k Ω CD, others : 150mV/47k Ω
Maximum power output	8V
Signal-to-noise ratio	Phono MC:84dB Phono MM:89dB CD:110dB AUX, Tuner, Tape1, 2 : 107 dB Tape3:109dB
Total harmonic distortion factor (20 Hz to 20 kHz)	Phono MC:0.003% Phono MM:0.002% CDs and others : 0.002%
Frequency characteristic	20 Hz to 20 kHz ± 0.2 dB
RIAA deviation	+ / - 0.2 dB
Channel separation (1kHz/10kHz)	Phono MC, MM : 80dB/70dB CD, etc. : 85dB/65dB
Residual Noise (IHF-A)	1.0 μ V
Tone control	Bass : + / - 10 dB (50H) z Treble : ± 10 dB (20 kHz)
Pwer	AC100V 50/60Hz
Power consumption	27W
External dimensions	Width 438x Height 86x Depth 405 mm
Weight	8.8kg
Attachment	Remote control