Introduced in 1984 the Grand Integra M510 was the biggest stereo amplifier built for home use by ONKYO. The M-510 has completely separate L/R channels all the way back to the power switch and AC cord. Each channel's power supply has two power transformers: one BIG toroidal unit with tremendous power capacity, and an "in-phase" transformer - which smooths out fluctuations in the charging currents. AC from the transformers is converted to DC by high-current rectifiers, and each channel has two massive 33,000 microfarad 100 volt filter/storage capacitors. A third, independent power supply provides DC energy for the front panel lights, protection circuitry and speaker relays. Meter sensitivity can be switched from normal to -10dB to get meaningful readings even at low power levels. The design is complemented with genuine wood side panels. No specifically matching preamplifier was built. Technical data: 300 W/ch (20Hz - 20 kHz 8 ohm) Dimensioms: 507x264x512 mm Weight 63 kg.
