Technics, Bose - HD70 + Acoustimass® 5 Series III Hi-fi set - Multiple models

Technics HD70 Hi-Fi System with Bose Acoustimass

Interesting vintage Hi-Fi system for sale: Technics HD70 series, produced in Japan by Matsushita Electric Industrial Co., Ltd., paired with a Bose Acoustimass speaker system featuring 4 satellite speakers.

The Technics system dates from around 1996 and consists of four coordinated separate components: a multi-CD player, cassette deck, radio tuner, and stereo amplifier.

The setup is completed by the Bose speaker system, comprising four tilt-adjustable two-way satellite speakers and an Acoustimass module dedicated to the bass frequencies.

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1. Technics SL-HD70 – Compact Disc Changer

Type: multi-disc CD changer/player
Year: around 1996
Color: silver/champagne with dark side trim
Dimensions: approximately 19.6 × 6.7 × 22.9 cm (W × H × D)
Weight: approximately 1.7 kg

Specifications

- Multi-disc changer
- Capacity: 5 CD
- Compatible with Audio Compact Discs
- 1-bit MASH digital converter
- Disc selection from front panel
- Programmable playback
- Track search
- Digital display
- Play/Pause and Stop controls
- Optical digital output
- Integrated into the Technics HD70 system via dedicated connections

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2. Technics RS-HD70 – Stereo Cassette Deck

Type: stereo cassette player/recorder
Color: silver/champagne with dark side trim
Dimensions: approximately 19.6 × 10.3 × 22.1 cm (W × H × D)
Weight: approximately 1.8 kg

Specifications

- Playback and recording on cassette
- Auto Reverse system
- Dolby B Noise Reduction
- Fast forward/rewind
- High Speed FF/REW
- Automatic track search
- Digital counter
- TPS – Tape Program Sensor
- Reverse mode selection
- Synchronised recording with other system components
- Front display and controls

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3. Technics ST-HD70 – Stereo Tuner with RDS

Type: digital stereo radio tuner
Year: around 1996
Color: silver/champagne with dark side trim
Dimensions: approximately 19.6 × 6.7 × 23.5 cm (W × H × D)
Weight: approximately 1.2 kg

Specifications

- FM and MW/AM reception
- RDS system
- Digital tuning
- FM range: 87.5–108 MHz
- MW range: 522–1611 kHz
- FM sensitivity: about 1.8 µV
- FM signal-to-noise ratio: about 70 dB
- Audio output: about 150 mV
- Station memory
- Digital display
- Automatic/manual frequency selection
- Rear connections for FM/AM antenna

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4. Technics SE-HD70 – Stereo Integrated Amplifier

Type: stereo integrated amplifier
Year: around 1996
Color: silver/champagne with dark side trim
Dimensions: approximately 19.6 × 10.3 × 25.5 cm (W × H × D)
Weight: approximately 4.1 kg

Specifications

- Claimed power: about 45 W per channel into 8 Ω
- Frequency response: 20 Hz – 20 kHz
- Minimum speaker impedance: 6 Ω
- Volume control
- Bass control
- Treble control
- Balance control
- Source Direct function
- Front headphone output
- Source selection
- Rear connections dedicated to other Technics components
- Speaker terminals
- European 230 V AC / 50 Hz power supply

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Bose Acoustimass System

The Technics system is provided together with a Bose Acoustimass speaker system in black.

5. Four Bose Direct/Reflecting two-cube satellite speakers

Quantity: 4 speakers
Color: black
Configuration: two-way/tilt-able cube

Some units also feature the gold “Limited Edition” inscription.

Features

- Bose Direct/Reflecting system
- Two stacked and tilt-able elements
- Ability to adjust the orientation of the two speakers
- Designed to combine direct and reflected sound emission
- Black grilles
- Polymer housing
- Connected via speaker cable
- Extremely compact dimensions compared to traditional Hi-Fi speakers

Note: exact weight and dimensions of the satellites depend on the Bose generation. Bose Direct/Reflecting speakers of this type are generally around 1.1 kg per double cube and about 7.9 × 15.7 × 10.2 cm, but the data should be verified for the exact model.

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6. Bose Acoustimass Module

Type: dedicated bass-frequency reproduction module
Color: black
Finish: black with Bose logo and Acoustimass inscription

The module uses Bose Acoustimass technology to reproduce the system’s low frequencies while keeping the satellite speakers separate and compact.

Visible features

- Black cabinet
- Front acoustic port/duct
- BOSE logo
- ACOUSTIMASS SYSTEM inscription
- Dedicated connections to the speaker system
- Structure designed to be used with the Bose satellites

The module has adhesive tape strips on the top, kept in the original state and clearly visible in the photographs.

Note: the dimensions and weight of the Acoustimass module are not stated as exact data until the exact model number is identified, since Bose has produced numerous visually similar Acoustimass versions but with different weights and dimensions.

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Weight of the Technics components

- Technics SL-HD70 CD Changer: 1.7 kg
- Technics RS-HD70 Cassette Deck: 1.8 kg
- Technics ST-HD70 Tuner: 1.2 kg
- Technics SE-HD70 Amplifier: 4.1 kg

Total weight of the four Technics components: about 8.8 kg.

This weight does not include the Bose Acoustimass module, the four satellites, and all related cabling.

Colors and finishes

Technics HD70: elegant silver/champagne metallized finish with dark side elements.

Bose: predominantly black finish, with black grilles and Bose logos; some speakers feature gold “Limited Edition” inscriptions.

The combination creates a typical 1990s Hi-Fi aesthetic, particularly appealing to collectors and enthusiasts of vintage audio systems.

Conditions

Used system stored in the conditions shown in the photographs.
Normal signs of wear consistent with the age of the equipment are present.
The Bose Acoustimass module shows tape adhesive on the top area, visible in the images.
The photographs are part of the description and show in detail the cosmetic condition, components, connections, and accessories present.

Interesting system for collectors, vintage Hi-Fi enthusiasts, Technics and Bose fans, composed of Japanese Technics-made equipment paired with the famous Bose Acoustimass speaker system.