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Old 15th December 2012, 03:10 PM   #1
ODougbo is offline ODougbo  United States
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Default Read this one weird trick for great sound

Sometimes less is better - especially when on a budget!

I try not to use a pre-amp whenever possible; anytime you can connect the source DIRECTLY to a power amp, you're going to get some great, clear sound.

Of course, you'll have to deal with the level control.

In the photo, I connected a set-top-box directly to a 120watt power amp; going thru the box menu to adjust volume (a couple of extra steps).

There are "receivers" out there with jumpers and you can skip the pre-amp and go right in the power amp section.
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Last edited by ODougbo; 15th December 2012 at 04:10 PM.
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Old 15th December 2012, 04:21 PM   #2
DF96 is offline DF96  England
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'Great, clear sound' would depend on exactly how the box adjusts the volume. If it does it in software then you could have fewer significant bits at lower volumes.
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Old 15th December 2012, 04:43 PM   #3
ODougbo is offline ODougbo  United States
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This older Rotel (RB-980BX) never sounded better; getting CD quality sound with the 1 to 1 connection.

I did go through the TV at first; the 1 to 1 connection is a much better; snappier/quicker sound.
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Old 15th December 2012, 05:59 PM   #4
tvrgeek is offline tvrgeek  United States
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Preamps serve their purpose. The input network of the amp is highly sensitive to the source impedance. A passive preamp provides a variable source so it will effect not just the frequency response, but it also DOES effect the distortion. Don't believe me? Model it is spice.

Yea, I went the passive route years ago. Yea, I have a Rotel 840 integrated which is a passive preamp section. Well I use preamps now. When you step up to good amps and good preamps you will know what I mean. I am using a Nak CA-5 right now driving my highly modified Hafler 120. I can tell the difference even with the old Studio 20's that are doing temporary duty in my office.

If you want decent TV sound, you need to take the PCM output and run it through a decent DAC. The analog out from a STB is really poor.
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Old 15th December 2012, 08:08 PM   #5
ODougbo is offline ODougbo  United States
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Sounds good to me - I'd be interested in a low cost DAC preamp - but is there such a thing?

Dac Preamplifier - Integrated Amplifiers
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Old 16th December 2012, 09:33 AM   #6
ODougbo is offline ODougbo  United States
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What about these? Would this cut the mustard, i.e. be a step-up from analogue?

Or just so inexpensive - it may sound worse?

Topping D20 Multi-Function DAC 310-332

[buy and find out?]
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Old 18th December 2012, 08:10 AM   #7
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My leach amp does not have even a volume control. It is connected to the set top box through my sony stereo. All the controls now r from remote alongwith the added advantage of a EQ.

Gajanan Phadte
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Old 18th December 2012, 08:23 AM   #8
ODougbo is offline ODougbo  United States
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I've been looking around for a DAC - had no idea so many out there.

Muse (ebay) PE has a page full, Crutchfield, etc.

I did read a few DAC reviews that were negative; i.e. "hollow sounding"

I going order one of the minis - the hookup will be about the same.

STB - DAC - AMP (using optical cable)

Not having problem here w/ volume level - it's a nice matchup, very "normal".

Last edited by ODougbo; 18th December 2012 at 08:30 AM.
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