DENON PMA-701  1977 The Integrated Amplifier which carries the newly developed PCC system in order to pull out the characteristic of a record. PCC (Phono crosstalk canceller) has the work which adds and negates a reverse cross talk in the cross talk of a phone pickup system. Adjustment uses the attached record for adjustment and two knobs perform it. Thereby, an improvement hears to abbreviation-40dB in the most sensitive frequency band. The power amplifier part consists of differential amplification whole page direct connection OCL circuits, it is low impedance power supply circuit composition, and a new style power transistor, such as double epitaxial structure and the Mie diffusion structure, is adopted as an output final stage, respectively. In order to protect a speaker from an operation mistake or an accident, speed of response builds in the very quick reliable protection circuit. Moreover, in consideration of the influence on sound quality, the relay of special structure is adopted also about a relay. In order to improve the cross talk by interference between channels, the mutual intervention is reduced by separating the power source of the circuit composition which made the way become independent 2 system, and a power circuit with much current, and the power source of a preamplifier circuit with little current. In order for the small signal sent from a record player to prevent deteriorating by leading about and the change-over switch of wiring, a phone input circuit is made into one line, and the input terminal is made to link with equalizer amplifier directly. A shield line and stray capacitance could be made small by this, and input impedance is improved. In order to improve a dynamic cross talk, 3 power transformer systems are adopted as a power-source part.   Form Integrated Amplifier <Power amplifier part> Circuit system Differential amplification whole page direct connection pure complimentary OCL circuit Dynamic output (IHF) 220W (110W+110W, 8ohms) Output power (both channel drive, a sine wave continuation output) 20Hz - 20kHz 85W+85W (4ohms) 70W+70W (8ohms) THD (Main in->SP out) 0.05% or less (at the time of an Output power) 0.02% or less (at the time of 1W output) Cross modulation distortion (60Hz:7kHz=4:1, Main in->SP out) 0.05% or less (at the time of an Output power) 0.02% or less (at the time of 1W output) Output bandwidth (IHF, both ch(es) drive) 5Hz - 50kHz Transmission frequency response 5Hz-100kHz+0 Less than [ -1dB ] Input sensitivity/impedance 1Vrms / 50komega±10% (20Hz - 20kHz) Signal to noise ratio (IHF, A network, input short-circuit) 116dB or more Output load impedance 0.16ohm or less Output terminal Speaker AorB: 4ohms - 16ohms Speaker A+B: 8ohm-16ohm Headphone jack <Preamplifier part> Input sensitivity/impedance Phono: 2.5Vrms/50komega Tuner, Aux, Tape1, 2:150mVrms/85komega Phono maximum permissible input (Phono->Rec out) 230 or more (1kHz) mVrms THD (1kHz) Phono->Rec out: Less than 0.008% (at the time of 3Vrms output) 0.1% or less (at the time of the maximum except take-off) Aux->Pre out: Less than 0.008% (at the time of an Output power) RIAA deflection 20Hz-20kHz±0.2dB An Output voltage/impedance Pre out(more than load 50komega): 1Vrms (rating), 10Vrms (maximum) Rec out: More than 150mVrms/50komega Frequency response 5Hz-100kHz+0 -1dB (at the time of Tone defeat) Tone control Bass: 50Hz±10dB Treble: 20kHz±10dB Filter characteristic Low: 20Hz, 6 dB/oct High: 7kHz, 6 dB/oct Muting - 10, -20dB <PCC section> Maximum permissible input 14Vrms After-cancellation phone cross talk Abbreviation-40dB Transmission frequency response 5Hz-100kHz+0 -1 dB <Synthesis> Transmission frequency response (at the time of Tone defeat) Phono->SP out: 20Hz-20kHz±0.3dB Aux->SP out: 5Hz-100kHz+0 -3dB Signal to noise ratio (IHF, A network, an input short circuit) Phono: 76dB or more Tuner, Aux, Tape1, 2:100dB or more Cross talk (Phono->SP out) - 75dB or less (20Hz - 1kHz) - 60dB or less (20kHz) Power receptacle switched: Two lines, a total of 250W unswitched: One line, 100W Power source AC100V, 50Hz/60Hz Power consumption (Electrical Appliance and Material Control Law) 165W Dimensions Width 430x height 147x depth of 310mm Weight About 13kg Attachment The record for adjustment