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Putting Hi-Fi gear in a mid-fi system -- HELP

Guys;

After many years I'm getting back into Hi-fi. Here's my joy and my problem;

I picked up a Theta DS Pro Progeny DAC for $175.00 (stealing it!) and I'm placing it in a (gulp)
Sony STR450 Mid-Fi A/V receiver, and the front end is an old JVC CD player swapping out with a JVC DVD player. First off let me say the sound from the Theta is obviously marvelous (with some limitations). First off the output voltage from the Theta on it's Ananlog RCA jacks is more than my Sony can handle -- on Extreme dynamic range peaks there is audible distortion.

At one time I thought you could buy small -2db or -4db attenuator pads you could place inline with your RCA jacks and cut down some of your juice -- does anybody out there know of such puppies ?

My second problem now is my CD player is not up to snuff -- no Toslink, and the digital co-ax jack distorts. Whwn I plug the Toslink in from my DVD player, 90 % of my distortion disappears. Can you guys point me to a good CD player/transport with fiber out that I could get at a good price ? I know you guys are gonna tell me I need to look at a good preamp with adjustable gain, but that's not in the cards right now -- still working on the WAF for more high-end gear and she likes the Sony for movies right now. So I'm looking for any help or tips you guys can provide.
bad_ears
eastein
97 posts
 
You might check out a monarchyaudio.com DIP, digital interface processor between your cd and theta. This is from their web site:

Its main functions:

Jitter reduction/signal conditioning
Signal Boosting(to 6 times higher)
Ground Isolation(to avoid noise/hum)
Format change(from Opto to RCA, from RCA to Balanced, etc)
Data Alignment (new data stream output)
The most dramatic feature is the ClassicÂ’s built-in precision clock. The original clock retrieved from the transport is abandoned.

A new reference clock is introduced to hold the sampling frequency at a precision 44.1KHz(standard CD format, hence the name "Classic")

This precision clock, at a strong signal strength, allows any conventional D/A converter to operate with far better precision and efficiency, resulting in higher definition, better instrument localization, wider and deeper sound
field , and above all, more involving music enjoyment.

The DIP Classic accepts all 2-channel stereo signals, with sampling frequency from 32 Khz to 96Khz. The output will work with ALL D/A converters.

Price $249.-
sogood51
2,157 posts
 
Your Dac has 4.5v output which is for sure on the high side, 2v is pretty standard for most cdp's.
bad_ears OP
5 posts
 
Thanks for your responses guys, you have given me something to work on. A little more info -- my RP56 DVD player only has one fiber connection out, and I'm tired of swapping betwixt the the Theta and the Sony for 5.1 shtuff.

I'll be emailing a few folks as they have some interesting information they'd like to share with me. If I get a solution soon I'll post back with the results.

Thanks again all for responding.
distortion
571 posts
 
Theta has fantastic service. They just calibrated, tested, and lowered my output, on my DAC(DSPro Basic I). All for a mere $100.00.

Give Theta an email. Fast response with reasonable turnaround for such a low price modification.

I love my DAC, but that HOT output needed some taming.
cytocycle
1,043 posts
 
Use your DVD player, stick with Coax (the distortion is related to the Receiver not being able to take the 4.5volt output of the DAC). Have Theta service your dac or change your receiver.
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