I bought this amp “as-is”. When I tried testing it, the amp sounds great on the left channel, but right channel doesn’t get very loud, and has distortion. I haven’t been able to test every feature, but the volume pots all seem to work smoothly with no static. I’ve carefully checked the VFETs (keeping them in their original matched pairs) and they test fine. I don’t know enough about working on VFET amps to feel comfortable going any further, so I’m listing this as parts/repair. Let me know if you have any questions! Check my feedback and buy with confidence! Note: If you live in AK or HI, there will be a shipping surcharge, message me for info. Note: This is the 100v model, so you’ll want to use an adapter. Note: I will package this very securely, so it arrives safely.

On Offer one Fantastic Sony VFet 4650 This is orginal totalyand has the Orginal Vfets as shown with matching rank numbers If you are looking at this you know what I am on about This is totally orginal it does need the VD1221 changing It works well sounds well stunningly good The control are nosie ( balance ) but its not been used for a time Condition is good has a few marks but still very nice example THIS IS A COLLECTION IN PERSON ONLY I Will NOT PACK IT FOR ANY COURRIER COLLECTION So you can hear it working on collection and be happy with it Now becoming very rare The Vfets are not available so they alone are worth the money but you know that ... Any Questions Please Ask A very nice machine -Fet is the acronym for the newly developed vertical type field effect power transistors used in the TA-4650 amplifier.A V-Fet has extremely low output impedance and excellent high power capability, delivering an output current proportional to input voltages and assuring virtually distortion free amplification.Use of the V-Fets in the power output stage results in a quality of reproduction hitherto not available to audiophiles. SpecificationsPower output: 30 watts per channel into 8? (stereo)Frequency response: 10Hz to 100kHzTotal harmonic distortion: 0.05%Damping factor: 45Input sensitivity: 2.5mV (MM), 150mV (line)Signal to noise ratio: 70dB (MM), 90dB (line)Output: 150mV (line), 17mV (DIN), 1V (Pre out)Speaker load impedance: 4? (minimum)Semiconductors: 4 x VFET, 4 x FET, 36 x transistors, 26 x diodesDimensions: 460 x 168 x 323mmWeight: 12.4kg

On Offer one Fantastic Sony VFet 4650 This is orginal totalyand has the Orginal Vfets as shown with matching rank numbers If you are looking at this you know what I am on about This is totally orginal it does need the VD1221 changing It works well sounds well stunningly good The control are nosie ( balance ) but its not been used for a time Condition is good has a few marks but still very nice example THIS IS A COLLECTION IN PERSON ONLY I Will NOT PACK IT FOR ANY COURRIER COLLECTION So you can hear it working on collection and be happy with it Now becoming very rare The Vfets are not available so they alone are worth the money but you know that ... Any Questions Please Ask A very nice machine -Fet is the acronym for the newly developed vertical type field effect power transistors used in the TA-4650 amplifier.A V-Fet has extremely low output impedance and excellent high power capability, delivering an output current proportional to input voltages and assuring virtually distortion free amplification.Use of the V-Fets in the power output stage results in a quality of reproduction hitherto not available to audiophiles. SpecificationsPower output: 30 watts per channel into 8? (stereo)Frequency response: 10Hz to 100kHzTotal harmonic distortion: 0.05%Damping factor: 45Input sensitivity: 2.5mV (MM), 150mV (line)Signal to noise ratio: 70dB (MM), 90dB (line)Output: 150mV (line), 17mV (DIN), 1V (Pre out)Speaker load impedance: 4? (minimum)Semiconductors: 4 x VFET, 4 x FET, 36 x transistors, 26 x diodesDimensions: 460 x 168 x 323mmWeight: 12.4kg

Ich biete hier meinen Vintage-High-End Vollverstrker von Sony an. Fantastischer Klang, der auch von neueren Gerten kaum erreicht wird. Kann natrlich gerne vorgefhrt werden. Der Verstrker befindet sich optisch in einem neuwertigen Zustand. In diesem Zustand drfte es weltweit keinen zweiten geben. Das Terminal fr Speaker A wurde auf Bananen-Buchsen umgebaut. Original natrlich noch vorhanden und kann bei Bedarf wieder ohne Beschdigung zurckgebaut werden. Technisch absolut einwandfrei. Hier kratzten keine Regler oder Tasten. Alle Eingnge/Ausgnge funktionieren perfekt. Lieferumfang: Sony TA-8650 Neupreis ber 3.000.- DM (1978) Privatverkauf - Keine Rcknahme - Keine Gewhrleistung Versand nur innerhalb der BRD! Am besten natrlich Abholung!

SONY TAN-5550 VFET Endstufe & TAE-5450 Vorverstärker. Bei der Vorstufe funktioniert leider die (Tone) Klangregelung nur auf einem Kanal (Ein Kanal geht der andere ist leiser). Ohne Klangregelung funktioniert die Vorstufe einwandfrei. Sonst alles andere funktioniert. Phono Eingänge usw. Es wurden alle Elko‘s getauscht also die Vorstufe wurde recapt (Alle Nichicon Muse usw. ca 50 Stuck sind getauscht) Ich bin sicher das man die Klangregelung reparieren kann. Die Lampe in dem Ein/Aus Knopf leuchtet nicht. Die Endstufe funktioniert und klingt sehr gut, wurde aber nicht recapt. Es wird empfohlen die zu überholen. Die Geräte sind für das alter in gutem Zustand. Privatverkauf. Keine Garantie. Kein Umtausch oder Rückgaberecht.