Audio Database

E-1
Commentary

This is a phono amplifier that has a separate phono equalizer and is thoroughly pure oriented.

Equipped with an articulator position that blends the cartridge with the signal current of the music to be played.
When music is played with the impedance switch in this position, the cartridge is tuned so that the playback capacity of the cartridge is minimized to that music.

A flat RIAA curve is obtained by combining an NF-type equalizer and a CR-type equalizer (for super wide area only) using computer simulation.

In addition to the left and right channels, it uses a 4-amplifier configuration for MM/MC exclusive use. It can draw out the characteristics of all cartridges with various impedance values such as Orthophone type with internal impedance of 2 Ω and Denon type with internal impedance of 40 Ω.

Each MM/MC has a 3-stage impedance switching function.

The MM/MC equalizer is switched to the ground side using an audio-only relay.

All circuits, including accessory circuits such as relay controls, are separately arranged in an optimum position as a discrete configuration, and noise is isolated by shield partition walls to prevent mutual interference.

Two inputs can be switched on the front panel to accommodate two players or a twin-arm type player. The selected input signal is automatically taken out from one output terminal using a 2-in-1-out method.

It uses custom audio parts such as block capacitors with excellent instantaneous discharge characteristics and no colorization, and large-capacity resistors with high information content and ultra-low distortion characteristics.

Model Rating
Type Phono amplifier
Method MM/MC Independent NF Type EQ + CR Type
Input sensitivity MM:4mV
MC:0.2mV
Input impedance
MM: 34k Ω (Low)
50k Ω (Mid)
75k Ω (High)
MC: 28 Ω (Low)
106 Ω (Mid)
560 Ω (High)
Gain (1 kHz) MM:36dB
MC:62dB
Rear curve deviation 30 Hz to 20 kHz ± 0.2 dB
20 Hz to 100 kHz ± 0.5 dB
Output Level / Impedance 250mV/230 Ω (1 khz)
S/N ratio (IHF-A) MM:103dB
MC:83dB
Channel separation 90 dB or More (10 kHz)
Power consumption 11W (Electrical Appliances and Materials Safety Act)
External dimensions Width 467x Height 82x Depth 404 mm
Weight 9.0kg