Apparecchio sobrio ma molto ben costruito. Tipico fascino anni settanta con il suo frontale in alluminio spazzolato e le grandi manopole. Si tratta di un amplificatore integrato usato revisionato di qualità giapponese.
Molteplici le fonti selezionabili tra cui non manca un curato ingresso per il phono giradischi.
Completamente revisionato e testato. Perfettamente funzionante.
Attenzione: questo apparecchio va alimentato con una tensione di 100 VAC quindi, per poterlo collegare alla rete europea di 230 V, necessita di un trasformatore esterno (non incluso in inserzione)
Per coloro di voi che masticano un pò di inglese allego una descrizione tratta dal web:
The Integrated Amplifier which supplied and developed the know-how which Pioneer acquired with the high-end model.
The styrene capacitor of the nichrome metal film resistor of 1% of an error and 2% of an error etc. has adopted the element selected carefully as the NFB element which the circuit systems of an equalizer part are the first rank differential and three-step hardwired-connection circuitry by �}2 powering, and determines the frequency characteristic.
Moreover, the dynamic margin of 200mV of maximum permissible inputs has been obtained by positive/negative 2 powering of +23V and -19.5V.
Flat amplifier had adopted the PNP-NPN2 stone stream composition of the low noise and the low distortion, raised the power-source utilization factor, and has expanded the dynamic range.
And the tone control circuit of the following stage is CR type, and has adopted the knob with a click stop.
Moreover, regardless of the location of a tone control knob, the tone on/off switchpoint which makes a tone a flat in an instant is carried.
The attenuator type of 32 steps is adopted as a volume.
The first rank is a differential amplification with the dual transistor to which the property was equal, and the power amplifier part serves as a pure complimentary OCL scheme of the whole page hardwired connection.
Since the constant current load intensity was adopted as the pre-driver stage and the low-pass time constant is banished, the play to super-low-pass one is possible in this circuitry. Furthermore, the load intensity of a pre driver is reduced and this scheme can take a large gain in the linear area of a transistor. Moreover, the large gain at the time of an open loop is taken, and distortion is reduced by fully applying NFB.
The large-sized transformer and the mass capacitor of 10,000 micro Fx2 are adopted as a power-source part.
In this power-source part, the transformer coil for a power amplifier final stage and the stabilizing-supply parts before it is made into another coil, and the cross interferencee is reduced.
In the protection network, it keeps in the protection network which used the power relay.
Moreover, this circuitry serves also as the muting circuit and has cut the noise at the time of power-source on/off.
The loudness contour and the two-line tapes monitor are carried.
I numeri importanti
Inferiore allo 0,05%
Sensibilità di ingresso
2,5mV (MM); 150mV (line) 50 Kohm
Risposta in frequenza
20 Hz – 20 KHz
Rapporto segnale / rumore
73dB (MM); 95dB (line)
2x50 W RMS su 4 ohm; 2x45 W RMS su 8 ohm
Compresa tra 4 e 16 ohm
380 x 139 x 308mm