Description
Product descriptionThe integrated amplifier is based on the PMA-1500R and has been improved to support next-generation audio. Audio equipment peripheral equipment amplifierWe have revised the power amplifier circuit, etc., and improved the upper limit of frequency characteristics during actual use to 100kHz.Furthermore, by using a low impedance volume, the noise generated in the amplifier during actual use is reduced and resolution is improved.The amplification element uses a large current type amplification element, UHC-MOS, in order to achieve both high sound quality and speaker drive ability with the smallest unit of amplification element. A single push-pull circuit using UHC-MOS achieves both expressiveness and high power.It uses a twin transformer parallel connection that greatly improves the characteristics of the magnetic circuit and winding.In addition, by adopting an L.C. (Leakage Cancelling) mounting method that mutually cancels out the effects of magnetism, the leakage flux of the power transformer, which is a source of noise within the amplifier, is reduced, improving power supply capability and reducing noise. Masu.The rectifier circuit uses the Schottky barrier diode used in PMA-2000III etc. Low noise characteristics due to high-speed operation and high current characteristics provide sound quality with even lower noise.The independent configuration of the power amplifier block and the separate block structure for other circuits with different signal levels suppress deterioration in sound quality due to mutual interference between circuits and the inflow of noise.Additionally, a radiator stabilizer has been added to the power amplifiers radiator, which is susceptible to vibrations, to eliminate the effects on sound quality caused by interference between each block.In addition, the thickness of the steel plate was carefully selected for the chassis, and in order to further suppress vibrations, a combination of transformer base steel plate and special resin was used. amplifierIn order to reduce power consumption due to standby during remote power off, the microcomputer circuit and audio circuit are each equipped with dedicated power transformers. This not only reduces power consumption during standby, but also eliminates interference from the microcomputer to the audio circuit.Equipped with a microcomputer stop mode that automatically stops all operations of the microcomputer when the microcomputer is not controlling it, such as when listening. This stops the microcomputers clock oscillation during normal listening, eliminating the inflow of noise into the audio system.The speaker terminals are machined brass parts that are plated with gold to reduce transmission loss. In addition, by making the hole diameter of the clamp part ?6mm, it is compatible with large speaker cables.Furthermore, the two speaker terminals can be connected by bi-wiring.The phono equalizer section has a configuration in which a low noise FET is adopted as the first stage circuit of the discrete configuration.In addition, it is compatible with MM/MC cartridges by changing the switch.It is equipped with a pre-out terminal.Adopts parts such as gold-plated terminals and high-quality carbon resistors and capacitors.In addition, the power cord is detachable.A system remote control is included and is also compatible with DENON CDs, MDs, cassette decks, and tuners.In addition, an independent power transformer is used for the control circuit power supply for remote controls, etc., to reduce interference with the audio circuit.?Main specificationsModel integrated amplifierRated output (both channels driven, CD?SP out) 70W+70W (8?, 20Hz to 20kHz, THD 0.07%)140W+140W(4?, 1kHz, THD 0.7%)Total harmonic distortion rate 0.01% (at rated output -3dB, 1kHz, 8?)Speaker output terminal Speaker AorB: 4?~16?Speaker A+B: 8?~16?Bi-wiring load: 4? to 16?Input sensitivity/impedance Phono MM:2.5mV/47k?Phono MC:0.2mV/100?Line: 150mV/47k? (source direct off)150mV/13k? (source direct on)RIAA deviation MM:20Hz~20kHz ±0.5dBMC:30Hz?20kHz ±0.5dBRated output Equalizer amplifier output: 150mVFrequency characteristics 5Hz to 100kHz +0 -3dBSN ratio (hearing correction A, input short circuit) Phono MM: 91dB (at 5mV input)Phono MC: 76dB (at 0.5mV input)Line:110dBTone control Bass:±8dB(100Hz)Treble:±8dB(10kHz)Power outlet switched: 3 systems, total capacity 120WPower supply voltage AC100V, 50Hz/60HzPower consumption 250WStandby: Approx. 2WExternal dimensions (including legs, knobs, and terminals) Width 434 x Height 134 x Depth 407 mmWeight 14.6kg?The condition of the product is slightly scratched and dirty.There are a few scratches on the top plate, but this is subjective, but I think it is in good condition considering the model year.Before listing, I have confirmed the operation of the device on hand.DVD/AUX?TUNER?CD?TAPE1/DAT?TAPE2/MD terminalAnalog input and audio output have been confirmedI have not been able to confirm the PHONO terminal input as I do not have the equipment.BASS, TREBLE, BALANCE, VOLUME all work properly and there is no gully.Loudness ON/OFF and source direct ON/OFF are also functioning properly.For remote delivery areas, additional fees will be charged. Import duties,taxes and charges are not included in the item price or shipping charges. These charges are the buyers responsibility. These charges are normally collected by the delivering freight(shipping) company or when you pick the item up. -do not confuse them for additional shipping charges. We do not mark merchandise values below value or mark items as gifts. -US and International government regulations prohibit such behavior.
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