DENON/COLUMBIA MAT-4
¥ 56,800 (around 1968)
Commentary
Solid-state premain amplifier with all-silicon transistor configuration.
A single diffused mesa type power transistor is used for the output circuit, and SEPP-OTL system with Darlington connection is adopted.
Equipped with a purely electronic automatic recovery protection circuit.
Equipped with tone control, defeat switch and rumble filter.
Equipped with a latch filter.
Equipped with a loudness control.
Equipped with a level meter.
Uses DSC method.
Model Rating
Type | Pre-main amplifier |
Maximum power output | 120W+120W 100W + 100W (non-clip) |
Rated output | 60W + 60W (Strain Rate 0.2% or Less) |
Frequency characteristic | 10 Hz to 100 kHz ± 1 dB |
Input terminal | Phono1, 2, Mic : 2mV/50k Ω Tape Head : 1.5mV/200k Ω Tuner : 100mV/200k Ω Aux : 100mV/75k Ω |
Output terminal | 8 Ω, 16 Ω |
Accessory circuit | Tone control Loudness control Scratch rumble |
Attached terminal | DIN terminal Headphone Auxiliary power supply terminals |
Semiconductor used | Transistor : 37 Diode : 19 units Thermistor : 4 pcs |
Power supply voltage | AC100V/110V |
Power consumption | 40W (No Signal) |
External dimensions | Width 453x Height 145x Depth 337 mm |
Weight | 13.5kg |