We first came across Onkyo's one-box HD audio surround sound system at the Bristol Sound and Vision Show back in February, but details were sketchy.

Now we have the full technical specs, prices and pictures. The HTX-22HD is a 2.1 channel home cinema system based around an integrated AV amplifier with built-in subwoofer.

It costs £300 and comes with two front satellite speakers. An optional SKS-11 centre/surround speaker package for full 5.1 performance costs £100.

More after the break

It's one of the first systems of its type to include built-in Dolby Digital Plus, Dolby TrueHD, DTS-HD and DTS-HD Master Audio decoders, making it suitable for use with Blu-ray players and games consoles such as the Sony PS3.

Onkyo also claims it's the world's firs system to incorporate DTS Surround Sensation, which is aid to deliver a 'virtual' 5.1 surround experience from just two speakers.

Other highlights include two HDMI inputs and one HDMI output with x.v. Colour and Lip Sync support, plus the Audyssey 2EQ auto set-up system used on Onkyo's full-size home cinema receivers.

The technical specs in full are:

Advanced Features

* 2 HDMI Inputs and 1 Output (with Deep Color, x.v. Color, Lip Sync, decoding for DTS-HD Master Audio, Dolby TrueHD, Dolby Digtal Plus, Super Audio CD and Multi-channel PCM)

* DTS Surround Sensation Speaker Technology

* Onkyo RIHD for System Control

* VLSC(Vector Linear Shaping Circuitry)

* Audyssey Dynamic EQ for Loudness Correction

* Audyssey 2EQ to Correct

* Room Acoustic Problems

* 2 Optical / 1 Coaxial Digital Inputs

* 2 Audio Inputs

* Pre Out for Surround Back Speaker

* Theater-Dimensional Virtual Surround Function

* Remote Control Supplied

* 16 cm A-OMF Diaphragm Woofer

* Aero Acoustic Drive for Powerful and

* Natural Sound

* 2-Way, Acoustic Suspension Speakers

* 8 cm A-OMF Diaphragm Woofer

* 2 cm Balanced-Dome Tweeter

* Frequency Response: 70 Hz-50 kHz

* Max Power : 40 W

* Rounded Cabinet

Optional SKS-11 Surround Speaker Package

2-way, Acoustic Suspension Centre Speaker (D-11C)

* 8 cm A-OMF Diaphragm Woofer x 2

* 2 cm Balanced-Dome Tweeter

* Frequency Response: 70 Hz-50 kHz

* Max Power : 40 W

* Rounded Cabinet

Two-way Acoustic Suspension Surround Speakers (D-11M)

* 8 cm A-OMF Diaphragm Woofer

* 2 cm Balanced-Dome Tweeter

* Frequency Response: 70 Hz-50 kHz

* Max Power : 40 W

* Rounded Cabinet

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