Denon - PMA-500V , TU 450 Ensemble hi-fi - Différents modèles

DENON PMA-500V amplifier
DENON TU-450 tuner

These two Hi-Fi elements are part of a complete setup with a high-end cassettedeck and CD player (see last picture and my other auctions...)


DENON PMA-500V amplifier:
Built like a tank with plenty of power

Pre-main amplifier with video input and AV support.

It uses a unique non-feedback 0 db power amplifier that pursues high-purity and high-speed amplification.
The power stage electrically separates the voltage amplifier stage from the power amplifier stage to eliminate the influence of the back electromotive force from the speaker and to eliminate dynamic distortion caused by signal return to improve the dynamic characteristics.

The use of a pure dynamic power supply circuit with a 2-2 block capacitor suppresses the occurrence of dynamic IM distortion (intermodulation distortion) and improves the acoustic quality.

In order to eliminate the intrusion of external noise components, the power supply and main signal system are separated through a radiator in a chassis structure.
In addition, an input selector with an electronic switch has been adopted to provide an ideal layout for signal lines and to form a simple signal path by reducing the amount of wiring and shortening the wiring wires.

Equipped with a processor loop mechanism.

Equipped with two video inputs by complimentary service and push-pull circuit.

Equipped with Phono dedicated subsonic filter.

Built-in high-speed protection circuit.

Equipped with real-time tone control.

Specifications:

Power output: 80 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.07%
Input sensitivity: 0.2mV (MC), 2.5mV (MM), 150mV (line)
Signal to noise ratio: 68dB (MC), 88dB (MM), 105dB (line)
Output: 150mV (line)
Speaker load impedance: 6Ω to 16Ω
Dimensions: 434 x 137 x 385mm
Weight: 9.4kg

DENON TU-450 Tuner :

An FM/AM tuner equipped with 16 station preset functions designed with the theme of quality and usability as well as focusing on basic performance.

It employs a digital synthesizer system that allows easy channel selection and accurate tuning accuracy.

16 stations are covered by the use of 8 tuning keys and shift keys.
The "4-way tuning mechanism" has been adopted for the memory mechanism. It enables one touch random preset tuning that directly calls the desired station from among the 16 stored stations, automatic tuning that automatically finds radio waves and tunes, manual tuning that receives broadcasting stations with weak radio waves, and last channel memory tuning that automatically selects the last station received.

For accurate tuning, the PLL comparison frequency is set to 25 kHz, which is out of the audible band. In addition, a static control display is adopted to eliminate beat and noise in the audio band.

The front end section is designed with analog varactor diodes equivalent to 3 series and J-FET.
A ceramic filter with constant amplitude and constant delay characteristics is used for the IF stage.

It is equipped with MPX-NR which automatically reduces noise when receiving FM stereo with weak signal.
This function can be turned ON/OFF.

The AM section employs a two stage 3-terminal high-selectivity ceramic filter, an LC filter, and a low-impedance loop antenna that is resistant to fluorescent light noise.

It has a memory backup function of about 30 days.

Shipments to all EU countries are possible via DHL or DPD with insurance.
Within NL with PostNL or DHL