LUXMAN L-530

Commentary

Pre-main amplifier with DUO β circuit / S.

Uses DUO β circuit / S which eliminates the pre-drive stage of the power amplifier circuit.
A low-noise FET parallel push-pull input is received by a differential cascode and connected to the parallel push-pull output of the R. E.T. (ring emitter transistor) to realize an amplifier circuit with excellent bare characteristics such as SN ratio and distortion factor.

By using parallel push-pull R. E. T. with high-speed switching characteristics for the output stage of the power section, the class A operation range is expanded to 15W, and the class AB maximum output is 120W/ch.
The heat sink uses a Sky-Fin type heat sink with high heat radiation effect.

The equalizer uses an open-loop gain switching type.
While the normal high gain equalizer is compatible with both MC and MM cartridges by changing the amount of NFB, the L-530 has an appropriate amount of NFB set for each cartridge, and the gain is changed by changing the open-loop gain.

It is equipped with a phono straight function that switches to disk playback prior to other program sources.
It is possible to make a simple circuit by jumping to selector, filter and balance control and cutting off unnecessary wiring.

For tone control, you can set 6-point turnover frequencies for both high and low frequencies.
In addition, by using the NFB circuit of the power section instead of using an independent amplifier circuit, it is possible to adjust sound quality without generating noise or changing sound quality when tone in.

The power supply section uses a large transformer with a capacity of 320 VA and a block capacitor with a capacity of 30,000 μ F to provide extra space.

Equipped with a warm-up indicator, the indicator turns off when a certain period of time elapses after power is turned on and the sound quality becomes stable.

Equipped with a line phase sensor, it can detect the polarity of home AC power supply and improve the sound quality by unifying the polarity.

Model Rating

Type	Integrated amplifier
Effective output (both channel operation)	Class A Region : 15W + 15W (8 Ω) Class AB Maximum : 120W + 120W (8 Ω)
Total harmonic distortion factor	0.007% or Less (8 Ω, Both Channel Operation, 15W)
Input sensitivity	Phono MM:2mV Phono MC : 125 μ V Tuner, AUX, Monitor, Main In : 340 mv
Input impedance	Phono MM : 100k Ω, 50k Ω, 100 Ω Phono MC : 300 Ω, 100 Ω, 40 Ω Tuner, AUX, Monitor : 40k Ω Main In : 47k Ω
Signal-to-noise ratio (IHF-A)	Phono MM:84dB Phono MC : 70 dB (250 μ V input) Tuner, AUX, Monitor, Main In : 110 dB
Frequency characteristic	10 Hz to 100 kHz -1dB
Tone control	Low turnover : 77 Hz, 120 Hz, 200 Hz, 330 Hz, 550 Hz, 880 Hz High turnover : 880 Hz, 1.5 kHz, 2.5 kHz, 4 kHz, 6.5 kHz, 10 kHz Maximum variation : + / - 8 dB
Tape monitor	Two lines (Tape1 and 2)
Tape dubbing	Route 2 (1 → 2, 2 → 1)
Filter	Subsonic : 15 Hz High Cut : 9 kHz
Power consumption	380W
External dimensions	Width 453x Height 161x Depth 444 mm
Weight	18.0kg