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Good 8 channel analog receiver/amp?

post #1 of 27
Thread Starter 
I am looking to upgrade, and have been having some trouble finding the right receiver for my setup. I have been using the auzen forte 7.1, sending the 8 channels via analog. It seems that many new receivers are starting to do away with the analog pre-amp inputs. I would like for my audio to be processed by the sound card. I am going to RMA my forte, and am thinking about upgrading that as well. Does anyone have any suggestions for a good receiver/amplifier with 8 channel analog inputs? This is the sound card that I was looking at to replace the forte.

http://www.newegg.com/Product/Produc...82E16829271005

Anyone have any experience with these?
post #2 of 27
What receivers would you be referring to? I haven't heard anything about 6-channel direct being phased out.
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post #3 of 27
Thread Starter 
I have front, side, back, center, sub channels already in place. I don't want to have my side and surround both playing the same information.
post #4 of 27
Hmm?
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post #5 of 27
Thread Starter 
http://www.amazon.com/Onkyo-HT-RC180...037906&sr=8-12

I meant that I was having trouble finding a receiver that had analog multi channel rca inputs. I think it would sound better using the sound card to process the sound rather the receiver.
post #6 of 27
I see what you mean. Most receivers have 6 channel direct, not 8 channel.

C-Media Oxygen HD CMI8788 is a decent DAC, there are better, including on many receivers, but I wouldn't go so far to say it would sound better from the sound card...but it's more convenient I suppose for a gaming sound card.

I know for Onkyo you need to step up to the TX-SR8xx series to get 8 channel direct. I think the 806 is $550 on Tigerdirect, and the 807 is $740 on Amazon.

The 805 is model is hard to find, on Amazon they are $490-$500 used. The 805 is the best under $1k receiver Onkyo ever built. The power supply on the 806 and 807 were cut significantly (the unit weight dropped a ton. Less weight = smaller heatsinks = less power).

TX-SR805 measured performance at Sound&Vision Mag
Output at clipping (1 kHz into 8/4 ohms)
1 channel driven: 201/322 watts (23/25.1 dBW)
5 channels driven (8 ohms): 141 watts (21.5 dBW)
7 channels driven (8 ohms): 128 watts (21.1 dBW)
Distortion at 1 watt (THD+N, 1 kHz)
8/4 ohms: 0.02/0.03%
Noise level (A-weighted): -76.1 dB


806/807 per S&V:
Output at clipping (1 kHz into 8/4 ohms)
1 channel driven: 191/171* W (22.8/22.3 dBW)
5 channels driven (8 ohms): 68 W**
7 channels driven (8 ohms): 68 W** (18.3 dBW)
Distortion at 1 watt (THD+N, 1 kHz)
8/4 ohms: 0.02/0.03%
Noise level (A-wtd): –76.0 dB
*Software impedance switch at “6 ohm” position; at the “4 ohm” position, power into 4 ohms was limited to approximately 68 W.


The 805 is worth it, it puts out 896W vs 476W on the 806/807. Unfortunately it's used. I think you can still purchase a warranty though Amazon SquareTrade...not sure though. Alternately you can try ebay, but obviously SquareTrade won't honor a warranty through it.

Here you can clearly see the 8 channel direct inputs on the 805:

http://www.avland.co.uk/onkyo/txsr805/rearlrg.jpg

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post #7 of 27
Thread Starter 
So do you think that it would be better to use the dac on the receiver, instead of the sound card?
post #8 of 27
The DAC on the Onkyo 8 (texas instruments 1796) series is slightly higher quality than the C-Media one (about 3db SNR higher), but the difference should be neglible.

Unless you play music at reference levels consistently (105db+) you probably won't be able to hear the difference, since the main difference is a lower noise floor. Also, there's too many other weak links in a system (pre-amp, amp, speakers) before the dac becomes relevant.

For all practical purposes the difference is irrelevant.
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post #9 of 27
A receiver is a processor, pre-amp, and amplifier combined. Your sound card is also a processor. Using direct skips the receiver's processor.

There is probably more noise rejection if you used a digital out to bypass the soundcard's DAC and let the receiver run as the processor, because a computer is a very noisy EM source. On the flip side, using the sound card's analog outs is probably more hassle-free from a usage standpoint.

Using a sound card as processor:

1) Native DVD-A playback
2) Native surround sound playback
3) Native surround sound gaming

Using receiver as processor (digital input)

Pro: Greater noise rejection

Cons:

1) No native DVD-A playback on the PC (due to digital protection limitations)
2) No native surround sound playback (you need a media player that can pass DD/DTS from the computer to the receiver)
3) No native surround sound gaming (you need a sound card with real-time Dolby Digital encoding)

For convenience sake I think using the analog outs is probably better.
Edited by astrallite - 6/8/10 at 10:50pm
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post #10 of 27
Good receiver for a good price right here. Denon AVR3310
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