Amplifier Luxman l-410
Legendary Stereo Integrated Amplifier LUXMAN L-410, recently serviced.
Description form audio-database.com:
The Integrated Amplifier of the REVOLVER series which supplied the Duo beta technology.
The Duo beta circuit / S of one-step amplification amplifier are carried in the power amplifier part.
A Duo beta circuit / S is with the "one-step amplification amplifier" which makes the amplification stage of an amplifier circuitry only one step, and realizes a low distortion with an open loop,The "Duo beta circuit" which combined DC servo tightened to an amplifier circuitry from the super-low-pass one besides proper-quantity NFB covering all the bands, and an audio frequency band,It is the generic name which summarized three of power circuits "plusX" which gives generous stabilization damping force to a power source,By this, since there is little high region stagger, a stability to the extent that the high region correction by phase gap is not needed is acquired, and also the factor in which a slew rate gets worse in addition to the threshold of an element is lost out of the circuitry inside amplifier, and it is wide opened from the ill effect of Izu of a power source.
The Duo beta circuit is carried in the equalizer part.
Moreover, the original phone straight functionality is carried, and contact leading about, such as not a mere it1 but light filters, a balance control, and selectors, is put into practice and separated about the disk reflex circuit.
The frequency-shifts type is adopted as a tone control.
Since a variation and the frequency which begins to change interlock and it operates, effective tone control is possible.
Power output: 75 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 100kHz
Total harmonic distortion: 0.015%
Input sensitivity: 0.1mV (MC), 2.5mV (MM), 200mV (line)
Signal to noise ratio: 67dB (MC), 87dB (MM), 110dB (line)
Output: 200mV (line)
Dimensions: 453 x 425 x 135mm