DIATONE DA-U600

Commentary

Solid state pre-main amplifier with all stages directly connected.

The power amplifier section uses a differential amplifier and an all-stage direct connection OCL circuit without coupling and condenser. This circuit reduces the distortion factor and expands the power band with compared with the output circuit using conventional condenser. The output circuit is not affected by the output condenser and prevents the deterioration of sound quality.

It uses an equalizer amplifier with a high allowable input, enabling playback with less distortion.

A 3-layer protection circuit is provided. In the event of an error, a protection circuit consisting of four transistor protection fuses, two speaker protection fuses, four transistors fuses, four transistors, and four diodes.

Two types of tapes can be played and dubbed without changing the connection.

Built-in microphone mixing circuit.

Model Rating

Type	Solid state pre-main amplifier
Power Amplifier Unit
Maximum effective power (0.5% distortion)	30W + 30W (8 Ω)
Harmonic distortion factor	0.07% or Less (20 Hz to 20 kHz)
Frequency characteristic	10 Hz to 50 kHz -0.2 dB
Damping factor	40
Input sensitivity	1V
Input impedance	50k Ω or more
Preamplifier Section
Frequency characteristic	Phono : 20 Hz to 20 kHz (RIAA) AUX, Tuner, Tape : 10 hz -3dB, 20 khz -0.2 db Mic:100Hz -3dB 10kHz -6dB
Equalizer allowable input	170 mv (1 khz, non-clip)
Crosstalk	55 dB or More (1 kHz)
Signal-to-noise ratio	Phono : 65 dB or more AUX, Tuner, Tape : 85 dB or more
Input sensitivity	Phono:2.5mV Mic:2mV AUX, Tuner, Tape : 150 mv
Output level	Rec Out:150mV Pre Out:1V
Tone control	Bass : 100 Hz, ± 10 dB Treble : 10 kHz, ± 10 dB
Loudness control (at Volume-30dB)	100 Hz : + 6 dB, 10 kHz : + 5 dB
Low-cut filter	70 Hz, -6dB
High-cut filter	9 kHz, -6dB
<General>
Power supply voltage	100 VAC, 50Hz/60Hz
Power consumption	60W
External dimensions	Width 456x Height 144x Depth 355 mm
Weight	9.1kg