DENON PMA-700V
¥ 79,800 (around 1986)
Commentary
Pre-main amplifier with video input and AV support.
Equipped with dual super non-feedback power amplifier.
In addition, a full DC configuration is adopted for all signal paths between the MC input and the speaker output terminals without using a coupling capacitor, and a new current mirror circuit using a high-speed transistor with excellent high-frequency characteristics is adopted for the voltage amplification stage to realize an excellent slew rate.
In addition, f equivalent to Pc200WTA large pellet power transistor with a 50 MHz multi-emitter structure is provided with sufficient margin to expand the full operating range.
By setting the floating circuit with clear ground potential, generation of low-frequency distortion is reduced.
In addition, by adopting a "pure dynamic power supply circuit" using a proprietary 2-4 block capacitor, dynamic IM distortion (intermodulation distortion) caused by ripple current is suppressed and low-frequency reproduction is improved.
In order to prevent noise from the power supply due to an increase in various digital devices, we have adopted a newly developed power transformer with a special electrostatic shield. We have also adopted a structure in which the power supply and main signal system are separated via a heat sink to improve the interference characteristics.
It is equipped with a DC servo type super equalizer using a low-noise FET differential amplifier input and a high-speed operational amplifier, and the RIAA deviation of 20 Hz to 100 kHz and ± 0.3 dB is obtained when using an MC cartridge.
It is equipped with a processor loop mechanism so that graphic equalizer can be used.
It uses an input selector with an electronic switch and reduces the number of wiring wires to form a simple signal path.
Equipped with Phono dedicated subsonic filter.
Built-in high-speed protection circuit.
.JPG)
Model Rating
| Type | Pre-main amplifier |
| Power Amplifier Unit | |
| Rated Output (20 Hz ~ 20 kHz) | 105W + 105W (8 Ω) 125W + 125W (6 Ω) |
| Input Sensitivity / Impedance | Processor Loop Input : 150mV/30k Ω |
| Total harmonic distortion factor | 0.004% (20 Hz to 20 kHz, 52.5W, 8 Ω) |
| Cross modulation distortion factor | 0.003% (equivalent to 105W, 8 Ω) |
| Dynamic Power | 350W/2 Ω |
| TIM Distortion | Measurement limit value or less |
| Slew rate | ± 350 V / μ sec or more |
| Output bandwidth | 5 Hz to 80 kHz (52.5W, 0.03%, 8 Ω) |
| Line input frequency | 4 Hz ~ 250 kHz, + 0 -3dB (1W, 8 Ω) |
| Output impedance | 0.1 Ω or less |
| Output terminal | Speaker : AORb : 6 ~ 16 Ω, A + B : 12 ~ 16 Ω Headphone Jack Maximum Output : 410 mW (8 Ω), 8 ~ 400 Ω Compatible |
| Preamplifier Section | |
| Input Sensitivity / Impedance | Phono MM : 2.5mV/47k Ω Phono MC : 0.2mV/200 Ω CD, Video1, 2, AUX/Tuner, Tape1, 2 : 150mV/30k Ω |
| Maximum Output / Rated Output | 10V/150mV (including processor and loop output) |
| Total harmonic distortion factor | 0.002% (1 khz, 10 v, processor loop output included) |
| RIAA deviation | 20 Hz to 100 kHz ± 0.3 dB (MC IN to processor loop output included) |
| <General> | |
| SN ratio (input ratio (input short-circuit, auditory sense compensation A) | Phono MM : 88 dB at 2.5 mV input Phono MC : 69 dB at 0.25 mV input Line : 107 dB (at 150 mV input) |
| Tone control characteristics | Bass : ± 10 dB (100 Hz) Treble : ± 10 dB (10 kHz) |
| Subsonic Filter for Phono | 16 Hz, -12dB/oct. |
| Picture-in performance | Frequency characteristics : DC to 10 MHz ± 1 dB Rated voltage / impedance : 1Vp-p75 Ω |
| Power consumption (Electrical Appliance and Material Control Law) | 205W |
| Pwer | 100 VAC, 50Hz/60Hz |
| External dimensions | Width 434x Height 157x Depth 397 mm (including foot, knob, terminal, etc.) |
| Weight | 12.0kg |