MACTONE XC-30

Commentary

This is a high-grade control amplifier that has been developed based on Marantz's R & D model and after a series of comparative studies on audibility.

The K ・ K ・ NF method is adopted for the first time in Japan, and excellent high-frequency characteristics are realized.

The tone control circuit is equipped with a rising point moving type circuit by frequency switching using K ・ K ・ NF method.

Various output circuits such as the main output circuit and the output circuit for tape recorder recording are reduced to 200 Ω or less by the cathode follower.

DC ignition is used for all stages.

Multi-channel output is possible with the separately sold split frequency unit.

Model Rating

Type	Stereo control amplifier
Circuit system	Equalizer and tone control by K ・ K ・ NF method
Distortion factor	0.1% or Less (at Output 3 v)
Frequency characteristic	30 Hz to 50 kHz ± 0 dB 10 Hz ~ 100 kHz + 0 -4dB
Input Sensitivity / Impedance	phono1, 2 : 1.5mV/50k Ω phono3 : 5mV/100k Ω Tape head : 1mV/500k Ω Tuner, aux : 200mV/1M Ω
Output impedance	Main output : 200 Ω or less Rec output : 200 Ω or less
Signal-to-noise ratio	phono:65dB tape:60dB Tuner, aux : 70 dB
Tone control	K ・ K ・ NF method frequency switching Bass ± 8 dB at 200 Hz (50 Hz) + / - 13 dB at 400 Hz (50 Hz) High range At 2.5 kHz : ± 12 dB (10 kHz) 5 kHz : ± 8 dB (10 kHz)
Filter	S-low filter : 50 Hz, 8 dB, 20 Hz, 17 dB
Multichannel output circuit	Transistor Type Split Circuit Unit (Sold Separately, NF Circuit DV-218) Low-pass / high-pass output circuit depending on the use Cutoff characteristics : 18dB/oct
Accessory circuit	Tape monitor Loudness control
Used vacuum tubes, etc.	Vacuum tube 12AX7T : 4 pieces 12AU7 : 2 Pieces Diode OA78 : 4 SM150a : 2 16C-4
AC outlet	Power switch interlock : 2 systems Power switch not linked : 1 system
Power supply voltage	100 VAC, 50Hz/60Hz
Power consumption	35W
External dimensions	Width 410x Height 160x Depth 230 mm
Weight	7.3kg