Onkyo has on its hands this week two new THX Ultra2 Plus certified 7.1-channel A/V receivers which are available now. These are the TX-SR876 and TX-NR906, pricing at around $1,800 and $2,300, respectively.

Features wise, the only main difference between these two new A/V receivers seems to be that on the TX-NR906 there are “advanced networked audio capabilities.” Key features otherwise include HDMI repeaters for four high definition video sources, THX Loudness Plus processing, Audyssey’s new Dynamic EQ and Dynamic Volume technologies, HQV Reon-VX video upscaling to 1080p, multi-room support and HD Radio.

Onkyo yesterday made some new product annoucements associated with mid-year releases. These new products include two mid-price home theater receivers and two packaged home theater systems. The Onkyo TX-SR706 receiver is now available around $900.  HT-S7100 and HT-S6100 systems are also currently available around $900 and $800 respectively. The TX-SR806 will price around $1,100, and it will be shipping in mid August.

Highlights of this new gear include both receivers being THX certified and including the new THX Loudness Plus audio processing technology for improved low-volume-level listening and the home theater systems being seven-channel. You can get full details after the jump.

Sony is updating its line of upper end “Elevated Standard” A/V receivers with three new models. The STR-DA4400ES, STR-DA3400ES and STR-DA2400ES receivers are priced at around $1,500, $1,000 and $800 respectively.

Sony said all three receivers will be available later this summer. Key features include 7.1 channel surround sound, support for advanced audio codecs like Dolby TrueHD, a new graphical user interface and auto audio calibration. You can get the full details of these new Sony ES A/V receivers after the jump.

Onkyo has released an upgrade to its TX-SR605, HDMI 1.3a home theater receiver with the announcement of the TX-SR606, while still keeping the price under $600. This new model comes similar to the original but with two more HDMI inputs added in which bring the total to four. They’ve also added in 1080i video upscaling, Audyssey’s new Dynamic EQ loudness compensation technology and the companies new Music Optimizer.

This is an impressive set up for the price, allowing four high-definition video inputs each with high-def 7.1-channel surround sound, and will also convert non-high-def signals up to 1080i. Aside from the new add-ons, the TX-SR606 receiver comes equipped with a 90 watt-per-channel amp, Remote Interactive HDMI control, has a number of surround sound codecs and is equipped to handle Sirius Satellite Radio.

Home electronics company Onkyo is set to bring us two new entry level A/V receivers which are each available in black or silver finishes. The 80 watt-per-channel TX-SR576 and 75 watt-per-channel TX-SR506 are priced at around $480 and $380 respectively.

These new Onkyo A/V receivers offer dual source “powered zone 2″ capability, meaning the receiver’s rear surround amplifier channels to power stereo speakers in a second room while still listening to 5.1-channel sound in the main zone. They also both offer support for Audyssey’s new Dynamic EQ loudness correction technology.