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Ariel Cabello

SONY TA-N7B power amp. In perfect working order (fully recapitulated in 2022), with minor signs of wear due to age and use (see photographs carefully, only the last two photographs do not correspond to the item for sale). The sound is spectacular and definitive for audiophiles. I'm selling it because I got the TA-N900 ESPRIT mono speakers. 

ATTENTION: THIS STAGE OPERATES AT 100V. THIS UNIT IS MANUFACTURED FOR THE JAPANESE MARKET AND THEREFORE, A TRANSFORMER IS REQUIRED FOR USE IN COUNTRIES WITH DIFFERENT VOLTAGES. The transformer is very easy to obtain online.


Here's Alex's review of this product from THEVINTAGEKNOB, which perfectly defines it:

A masterpiece of understated looks holding six pairs of Sony's original VFETs.
With the pre-Esprit TA-N88B, the TA-N7B was alongwith the TA-F7B integrated the last Sony unit to sport V-FETs and a fairly different design because of its hybrid BJT / V-FET power section and power cascode circuit, the latter feature having been revived by Sony with the N7B, then, much later, by others aplenty.

Fully DC, with two transformers for the regulation, two toroidal transformers for the power stages and a total 88,000µF of caps. The frame structure and back "holders" are made of diescast aluminium. The toroidal trafos were custom-ordered to Nippon Kinzoku, a company still in business today which must have provided most if not all toroid trafos to high-end JP hi-fi throughout the 70s and early 80s.

The "B" color varies from the dark grey of some versions to the soft greenish/bronze of others... It seems however that these color differences were restricted to a few pre-production samples as all produced N7B have the "euro" bronze tint.

The TA-N7 is silver and is extremely rare : less than a hundred made.
Silver units have the name and model number silkscreened on the front while the "B" units have it stamped ; the first export production run was the silver one, very quickly changed to the "B" color.

The hardcover hiding the four center caps was only available on european models.

If the Yamaha V-Fet amplifiers are somewhat "muscular", the TA-N7B and TA-F7B are just a bit more laid back. It may be a bit deceptive at first but in the long run... definitively better.
The N7B's sound is however difficult to describe because there is no "sound" - just pure musical bliss.

The production run must be around 3000 units, worldwide and all versions included.
At least #1977 sold in Japan, at least #82 for the (short) EU silver run, about #600 for the EU bronze run and under #100 for the US version.

Given that at least half of these went bust, were junked or eaten up by sea salt in Japan, the N7B is now... quite exclusive.

SPECS: 


Continuous RMS power :	2x 100W (20Hz...20Khz, 8 Ohm)
Power bandwidth :	5Hz...35Khz (8 Ohm)
Damping factor :	100 (8 Ohm, 1Khz)
THD :	less than 0,01% at rated output
less than 0,008% at 1W/10W output
less than 0,01% at 205mW...rated output
IMD :	less than 0,01% at rated output
less than 0,008% at 1W/10W output
Frequency response :	DC...100Khz (+0 / -1db, Direct input)
6Hz...100Khz (+0 / -1db, C-coupled input)
S/N ratio :	more than 120dB (short-circuited input)
Residual noise :	0,024mV (8 Ohm)
Direct inputs :	1,3V for rated output / 50kOhm
C-coupled input :	1,3V for rated output / 50kOhm, 3Hz cutoff
Outputs :	1 pair of speakers (8 Ohm or more)
PC :	480W (UK)
420W (AEP)
160W (USA)
350VA (Canada)
Dimensions :	43 x 17 x 33,5cm
Weight :	20,1kg
Finish :	TA-N7 = silver panel (EU ; first export batch only)
TA-N7B = green/bronze (EU, US, JP)
DC bias adjustment:	30...70mV DC with no signal input


Good - Number of items: 1 - Including: Solid state power amplifier - No extra's

Sony - TA-N7B Solid state power amplifier

Audio Equipment

Reserve price

No reserve price

Buy now

Budget

From

Closing date

28 December

Thursday

26 December

27 December

Monday

Tuesday

Location

The Netherlands

Italy

Belgium

Germany

France

Spain

Denmark

Portugal

Hungary

Japan

Romania

Poland

Austria

Greece

Lithuania

Latvia

Croatia

Ireland

Slovenia

Slovak Republic

Dimensions

Height

Width

Depth

Brand

Bang & Olufsen

Sony

Pioneer

Marantz

Technics

Philips

Akai

Denon

Bose

Yamaha

Harman Kardon

Onkyo

Sansui

Luxman

Kenwood

Grundig

Bower & Wilkins

Magnat

TEAC

Rotel

Dual

Revox

Object

Speaker set

Hi-fi set

CD player

Solid state stereo receiver

Solid state integrated amplifier

Turntable

Solid state multi-channel receiver

Record player

Cassette recorder-player

Audio-cassette deck

Tube radio

Radio

Stereo set

Subwoofer speaker set

Speaker

Audio amplifier

Audio component

Tuner

Solid state amplifier

Headphone

Reel to reel audio

Reel to reel deck 18 cm

Solid state stereo amplifier

Cartridge and/or needles

Active Speaker set

Country of origin

Netherlands

Material

Plastic

Aluminium

Rosewood

Condition

Good

Very good

Excellent

Mint

Various conditions

Excellent (EX)

Good condition - used with small signs of ageing

Very Good Plus (VG+)

Mint (M)

Good condition - used with small signs of aging & blemishes

Excellent condition: barely used with minimal signs of wear

Mint & Sealed (M&S)

Fair & Poor

Extras

No extra's

Power cord

Remote control

+ Extra item (see description)

Refurbished

Original user manual

Power Adapter

Power supply

No cables

Case

Brochures

Anti-pop Filter

Microphone Shock Mount

Flight Case

+extra item (see description)

Period

2010-2020

1980-1990

2000-2010

1990-2000

Style

Industrial

Scandinavian design

Danish design

Industrial design

Colour

Black

Tested and working

Tested and working/playable

Not tested

Music memorabilia type

Statue

Box Set

1900-2000

After 2000

1400-1900

Before 1400

Creator

Various Artists/Bands in 1970's

Luigi Caccia Dominioni

Japan & Related

Livio Castiglioni

Pier Giacomo Castiglioni

Achille Castiglioni

Raymond Loewy

Number of items: 2 - Mint (M)

Japan & Related - MA-X 46 - Audio cassette - 1987

Good - Number of items: 1 - Including: Power Adapter

SABA - S 347 GWL Tube radio

Very good - Number of items: 1 - Including: Power supply

Ei NIŠ - RR 240 Radio

Good - Number of items: 1 - Including: Power cord

Comptoir MB Radiophonique - Super Rimlock Tube radio

Blaupunkt - 2GW145 - WOODEN DKE - WWII - COLLECTOR’S ITEM - EXTREMELY RARE Tube radio

Denmark - Excellent condition: barely used with minimal signs of wear

Bang & Olufsen - Television (2) - Avant 55

Pioneer - CDJ-100S Dj CD player

Excellent - Number of items: 1 - Including: Power cord

Tivoli - Model one by Henry Kloss Radio

Philips - Philetta 51 Kleinsuper Tube radio

Good - Number of items: 1 - Including: Gramophone - No extra's

Electrola - Suitcase gramophone Gramophone

Excellent - Number of items: 1 - Including: Remote control - Remote control

Bang & Olufsen - beolink 4 remote Remote control

Excellent - Number of items: 1 - Including: Speaker - + Extra item (see description)

Bang & Olufsen - Beoplay A8 Airplay & Bluetooth / New Covers Speaker

Excellent - Number of items: 4 - Including: Gramophone - + Extra item (see description)

His Masters Voice - gramophone furniture Gramophone

Excellent - Number of items: 1 - Including: Turntable cartridge with stylus - Box

Bang & Olufsen - SP 6-7 Turntable cartridge with stylus

Good - Number of items: 3 - Including: Subwoofer speaker set - No extra's

Harman Kardon - HKTS 210SUB/230 - Subwoofer + 2 Satellites Subwoofer speaker set

Excellent - Number of items: 30 - Including: Blank audio cassette - No extra's

TDK - SA Gold, one type. Blank audio cassette

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Sony - TA-N7B Solid state power amplifier

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This object is no longer available, but there’s still lots to explore

Sony - TA-N7B Solid state power amplifier

Popular in Audio Equipment

1030 objects

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