Audio Database
TA-4650
Commentary

Stereo pre-main amplifier using V-FET.

All stages are directly connected pure complimentary service SEPPOCL circuit and DC-amplifier configuration using four Nch and Pch V-FETs.

An equalizer stage with two LEC transistor and V-FET for small signal is adopted.

The flat amplifier uses a DC amplifier that extends the band to DC in order to achieve faithful waveform transmission.

Equipped with a muting switch.

Model Rating
Type Stereo pre-main amplifier
Effective output (both channel operation) 1 kHz : 35W + 35W (8 Ω)
20 Hz to 20 kHz : 40W + 40W (8 Ω)
Dynamic Power (IHF, 8 Ω) 100W
Output Band Characteristics (IHF, 8 Ω) 5 Hz to 70 kHz
Harmonic distortion factor 0.1% or Less (Effective Output)
0.05% or Less (at 1W Output)
Intermodulation distortion factor (60 hz : 7 khz = 4 : 1) 0.1% or Less (Effective Output)
0.05% or Less (at 1W Output)
Damping factor (1 kHz, 8 Ω) 45 or more
Phono maximum allowable input (1 kHz) 2 systems 300 mv each
Tone control
(Turnover frequency in parentheses)
Bass (250 Hz) : 50 Hz + / - 10 dB
(500 Hz) : 100 Hz + / - 10 dB
Treble (3 kHz) : 20 kHz ± 10 dB
(2.5 kHz) : 10 kHz ± 10 dB
Filter Low : 35 Hz or less, 6dB/oct.
High : 6 kHz or higher, 6dB/oct.
Loudness control 50Hz:+10dB
10kHz:+3dB
Power consumption 110W
External dimensions Width 430x Height 170x Depth 325 mm
Weight 11.5kg
Sold Separately Sidewood TAC-15 (1 Set, ¥ 2,800)