There is one key reason why Onkyo has come to dominate the middle market for home cinema receivers – its designers have worked harder than most at packing in cutting-edge features at irresistible prices. So what has the brand added to its TX-SR607 over last year's best-selling TX-SR606?

A reasonable amount, you might well conclude after scanning the specs. The TX-SR607 provides an extra HDMI input, an additional subwoofer pre-out, Audyssey's Dynamic Volume technology and the new Dolby Pro Logic IIz post-processing mode.

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Ease of use is good. The receiver comes with a clearly-illustrated quick setup guide and a set of colour coded self-adhesive speaker cable identifiers. Okay, so probably neither amounts to a deal breaker, but they help those who are upgrading their kit after a long absence.

The brand has also announced new accessory add-ons, the UP-A1 iPod/iPhone dock (£80), and a DAB+ module, the UP-DT1 (price TBA). These plug in via the Onkyo's new U-port connector on the rear panel.

Be aware that the higher-quality DAB+ standard is being mooted for adoption in the UK, so the UP-DT1 (also compatible with ordinary DAB) offers futureproofing. Also, the TX-SR607 includes a perfectly serviceable preset FM/MW radio as part of the package, so you might not want the extra tuner after all.

The amplifier section is a full-on seven-channel design, which includes a multiroom facility. The amps claim to deliver a 145W per-channel at six Ohm.

As stated, the TX-SR607 is the launch vehicle for Pro Logic IIz, which adds two front height channels above the L/C/R. Non-directional (mono) elements of a mix are fed to these height speakers, to enhance presence, depth and airiness, adding a vertical dimension to the soundstage.

The value of this codec is debatable. From where I sit, it adds precisely nothing to the Onkyo's appeal. I found it works with some material featuring a strong mono element, falling rain for example, but without properly encoded source material the effect is inconsistent, and ultimately fails to do what its says on the tin, namely provide a meaningful height dimension to the listening experiences.

Dolby is actively promoting the technology to video games developers, but concedes it's unlikely to find support amongst film studios. Elsewhere, the TX-SR607 includes various acoustic modes re-purposed to ostensibly enhance the gaming experience.

Audyssey's microphone-driven 2EQ room/speaker setup system takes some of the pain out of installation.

Get a room

The SR607's multi-room support (more an American enticement I think) is modest. In a second room, the Onkyo will drive a single set of stereo speakers, but this reduces the number of enclosures operating in the main room to five plus a subwoofer or two. There is no video feed in the second room, but different sources can be selected for each of the two zones.

The six HDMI inputs (five on the back and one on the front) are all version 1.3a with 36bit DeepColour, support. Analogue video can be upscaled to 1080i, but not 1080p, via Faroudja DCDi Edge technology

The conventional analogue inputs are less exciting. There are more than enough of them to cope with most big, well-endowed systems, but a couple of omissions point to where Onkyo has saved a few quid. The lack of multichannel analogue audio inputs is a fatal blow to anyone wanting to spin Super Audio CDs or DVD-Audios. S-video has kicked the bucket, too.