MP3 playback

Soldato
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I'm told 192kbps + and VBR ~190+ well encoded MP3s really are pretty much indistinguishable to CDs.

But it's a bit cumbersome and you need to spend ~£150+ to get a half decent DAC in a CD player.

I'm told 192kbps+ and VBR ~190+ well encoded MP3s really are pretty much indistinguishable to CDs, even with quite good amps and speakers (~£500 setup).

Now, digitally you can make a CD out of an MP3 with zero loss in quality.

So that is one way of feeding the digital stream to the DAC (in the CD player) then onto the amp and speakers but it's a bit cumbersome going via a circular bit of plastic and you need to spend ~£200+ to get a half decent DAC in a CD player.

So what's the best way to get good quality MP3 source sitting on a hard disc to the amp and speakers?

The Slim Squeezebox player is just the network connectivity, decoder and DAC, thing is how does the analogue output compare to the analogue output of a decent CD player?

Do you get better quality taking the MP3, burning a CD then playing it on a £200+ CD player or by skipping the plastic media and going straight through something like the Squeezebox.

Are there any other products like the Squeezebox?

The Squeezebox specs say:
Analogue RCA outputs
High fidelity Burr-Brown™ 24-bit DAC
Two dedicated linear power regulators for DAC and line-out stages
Full 6.0Vpp line-level signals
Signal-to-noise ratio: over 100dB
Total harmonic distortion: less than -93.5dB (0.002%)

This compares to the NAD C521BEE CD player which is a highly regarded ~£200 machine with these specs:
Digital-to-analogue conversion Burr-Brown Sigma-Delta 20 bit
Digital Filter 8 x oversampled
Analogue filter 4 pole active
Frequency Response 5Hz-20kHz ±0.5dB
De-emphasis error <0.5dB
THD (at 0dB, 1kHz) 0.0035%
Dynamic Range 98dB
Linearity ± 0.5dB; 0 to -90dB
Signal/noise ratio, A-weighted 108dB
Channel separation at 1kHz >110dB
Channel separation at 10kHz >80dB
Wow and flutter Quartz accuracy
Output impedance 300Ω
Output level at 0dB 2.2V rms
Digital error correction CIRC, double error correction

So which is better? The Squeezebox with the 24-bit Burr-Brown and 0.002% THD or the CD player with the 108dB S/N? Though to be fair the Squeezebox does say over 100dB.

It would look like the Squeezebox provides the better output?

Thoughts?

EDIT: Here are some quick reviews: http://www.avreview.co.uk/news/article/mps/UAN/706/v/3/
 
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I would happily debate that compressed lossy media does NOT sound as good as the original CD. Having said that, it's an opinion, and some people state that they can't hear any difference.

I know several people who have squeezebox units, none of whom rate them as being that great.
A potential idea is to buy an external DAC. Connect the digital output from your PC to the DAC, and the DAC to the CD input on your amp.
 
Yeah, I hear what you're saying about MP3 quality... I guess I'm really interested in getting the best out of MP3 rather than deciding whether to use CD or MP3.
Mr_Sukebe said:
A potential idea is to buy an external DAC. Connect the digital output from your PC to the DAC, and the DAC to the CD input on your amp.
That's kind of what the Squeezebox is but with added decoder and network connectivity. How much do external DACs cost? I guess the problem with that approach is having to navigate and playback using the PC which isn't as nice as a dedicated player like this.
 
As posted elsewhere, I went for the SqueezeBox option rather either upgrading my CDP or buying a new one.

However, I have not used MP3 for over a year, preferring the lossless APE format. But a VBR setting using the LAME encoder is what I have used in the past.

I have a couple of external DACs, but I have not yet connected one to my SqueezeBox - most of my listening is currently done while working on my PC.
 
james.miller said:
damn. i just remembered the thread. im guessing yet again i never got the email notification :mad:

Completely OT

If your ISP has spam filters on their e-mail servers double check that they haven't filtered out your notifications.
As I've noticed that recently my ISP has started junking OCUK notifications. ;)
 
Why stick to MP3? There are other codecs that sound better at lower bitrates (OGG for one) Try comparing 128kps MP3 VBR against 128kps OGG VBR.

Even 256kps VBR LAME sounds a bit thin, can tell the difference between encode and original. OGG encode sound closer to the original.
 
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