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The immersive science of Audio Equipment, brought to you by {name}

Ariel Cabello

The Optonica SM‑4000 (also known as SHARP - 4000H) is a high‑end Japanese vintage amplifier from the mid‑1970s, renowned for its warm and well contoured sound, solid power output, and robust construction. It stands out with its advanced architecture (multi‑transformer power supply, differential amplifier stages, sophisticated filtering) and elegant classic design and wooden sides.

The device has been tested and verified, everything is working properly. It has no modifications or other interventions.

Very good overall optical condition, with a beautiful silver metallic front, a black metallic case with original wooden sides. It shows some signs of wear (some small stains and a superficial mark) in the right side of the front, and on the "function" knob. Please notice that these signs of wear are superficial and visible just more up close and when the light hits it at a certain angle. For your correct information: two switches and the "tape monitor" button are not original, but they are very very similar to the original (see pictures). Overall, it is a clean and a great device. Refinement, multiple settings and superlative sound fidelity - OPTONICA by Sharp, made in Japan.

You can see this device in action at the link below (please copy the link into your browser and use HiFi stereo headphones/speakers for a quality audition):

https://youtu.be/neKvjWok6D0?si=jDVL1bGCi7oZ5zaE
(Authorized link)


SPECIFICATIONS:

Power output: 58 W/channel (8 Ω), 70 W/channel (4 Ω)
Speaker load impedance: 4Ω to 16Ω
3 speakers system (Speakers A, B, C)
Functions & Inputs: Phono1, Phono2, Tuner, AUX, Tape1, Tape 2, Pre/Main connection
Frequency response: 15Hz to 70kHz
Dimensions: 442 x 144 x 380 mm 
Supply voltage: 220/240 V
Finish: silver/wooden sides


• All the devices presented at the auctions are carefully checked, tested and cleaned, to restore their original sound and shine. Respect for listeners and passion for music.

• Please study all the photos for a correct impression. The photos are part of the description and they tell you the exact condition of the product. The package will be packed properly and protected against shocks - very secure packing. It will be sent by registered mail and tracking code. 

▲Shipping ONLY in the continental E.U ▲

Very good - Number of items: 2 - Including: Solid state stereo amplifier - Power cord

Optonica - SM-4000 - Solid state stereo amplifier

Audio Equipment

Reserve price

No reserve price

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today

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tomorrow

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Saturday

8 April

Location

The Netherlands

Italy

France

Belgium

Germany

Spain

Romania

Denmark

Japan

Portugal

Poland

Hungary

Hong Kong

Ireland

Latvia

United Kingdom

Austria

Czech Republic

Greece

Croatia

Malta

Brand

Bang & Olufsen

Sony

Philips

Marantz

Pioneer

Bose

Technics

Akai

Denon

Harman Kardon

Yamaha

Kenwood

Onkyo

Sansui

Grundig

Bower & Wilkins

Jamo

Luxman

Tannoy

TEAC

Panasonic

Dual

Object

Speaker set

CD player

Solid state stereo receiver

Hi-fi set

Solid state integrated amplifier

Solid state multi-channel receiver

Radio

Stereo set

Record player

Cassette recorder-player

Audio-cassette deck

Tube radio

Solid state amplifier

Turntable

Audio component

Speaker

Subwoofer speaker set

Headphone

Equalizer

Tuner

Reel to reel deck 18 cm

Walkman

Gramophone

Blank audio cassette

Cartridge and/or needles

Country of origin

Material

Plastic

Aluminium

Metal

Condition

Good

Excellent

Very good

Mint

Various conditions

Mint & Sealed (M&S)

Good condition - used with small signs of ageing

Mint (M)

Good condition - used with small signs of aging & blemishes

Very Good Plus (VG+)

Good condition

Excellent condition: barely used with minimal signs of wear

Extras

No extra's

Power cord

Remote control

+ Extra item (see description)

Power supply

Refurbished

Original user manual

Power Adapter

No cables

Case

Brochures

+extra item (see description)

Anti-pop Filter

Period

2010-2020

1980-1990

1990-2000

2000-2010

Style

Contemporary

Colour

Turquoise

Tested and working

Tested and working/playable

Not tested

Record Label

Original/ Replica

Original/official

Music memorabilia type

Box Set

1900-2000

After 2000

1400-1900

Creator

Dieter Rams

Richard Sapper

Marco Zanuso

Japan & Related

P.E.L. Izeren

Mario Bellini

Rodolfo Bonetto

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Philips - 22 AF 685 - Semi Automatic Turntable

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Radioline Addison 5F Repro Radio - Iconic 1940s Canadian Yellow Streamline Design – AM/FM – Fully Working Radio

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Pioneer - CA-100 - Tape Creating Amplifier Analogue mixer

Good - Number of items: 1 - Including: No cables

Shure - M44MB Cartridge and/or needles

Harman Kardon - HK6150 Solid state integrated amplifier

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

Sony - ICR-N3 Portable radio

Good - Number of items: 5 - Including: Speaker set - No extra's

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Jamo - J-71 Speaker set

Mint - Number of items: 1 - Including: Box

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Denon - PMA-510AE Solid state integrated amplifier

Panasonic - RQ-S70V Walkman

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

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Good - Number of items: 1 - Including: Solid state stereo receiver - Original user manual, Remote control

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Carnegie - 50 Speaker set

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

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Optonica - SM-4000 - Solid state stereo amplifier

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