Audio Database

Image of A-924
Commentary

This pre-main amplifier was developed based on the "clean ground concept" which emphasizes the stability of the earth potential, paying attention to the dynamic characteristics and dynamic performance of the amplifier.

By designing based on the concept of clean ground, interference caused by ground loops is eliminated, and sound quality such as sound field feeling, S/N and low frequency sound is improved.

A discrete amplifier is used, in which parts such as transistors, resistors, and capacitors are laid out separately on a substrate. As a result, design freedom is greater than that of IC-integrated products in a single package, contributing to improved sound quality.
In addition, in order to expand the range of speakers, the power supply section has been strengthened and the power amplifier section has been made low impedance and wide range.

It is made with the basic design of wide band and low NFB (negative feedback).
It also uses direct signal construction to shorten the signal path.

It comes with a system control remote controller that can also operate T-424, C-724, etc.

Equipped with a source direct circuit, a loudness switch, a phono equalizer for MM cartridges, a tape monitor function and tone control.

A screw-type 2-system speaker terminal for banana plug is adopted.

Uses a power cord with polarity display.

Model Rating
Type Pre-main amplifier
Rated output
(20 Hz to 20 kHz, 0.08%)
45W + 45W (6 Ω)
40W + 40W (8 Ω)
Maximum practical power 80Wx2 (EIAJ, 4 Ω)
Total harmonic distortion factor 0.08% (at CD → SP Out rated output)
Frequency characteristic 15 Hz to 50000 Hz, ± 1 dB
S/N ratio (at rated output) 102 dB (CD → SP out)
Power consumption (Electrical Appliance and Material Control Law) 110W
External dimensions Width 435x Height 120x Depth 331 mm
Weight 6.7kg
Attachment Remote control