2. amps-preamps
  3. 170267-166737

Which digital input to use? Technics SU-R1000 or Technics SL-G700

First of all let me start by saying I've been an avid reader of the forums for quite some time but this is my first thread...

I have both the Technics SU-R1000 (Integrated) and the Technics SL-G700 (CD / SACD & Streamer).

I am using a Raspberry Pi running Roopieee with audio going out through a HiFiBerry Digi+ hat (optical).

I use this for Tidal / Qobuz and also my own digitised CD library.

I know that the  SL-G700 uses a dual mono DAC circuit (AK4497 from Asahi Kasei) but I am unsure of what the SU-R1000 uses.

Question is, which input should I be utilizing?

Digital in to the streamer with analogue out to the amp
Digital in to the amp 

Any opinions appreciated!

Thank you. 
stephencowslip
rego
378 posts
 
Use the USB input ... Berry Pi / Upgrade Power Supply or an Upgraded Streaming source.
nonoise's avatar
nonoise
10,823 posts
 
@ja_kub_sz,
Thanks for pointing that out. Practically all the reviews I've read on it had the reviewer assuming that since the Technics immediately digitizes the incoming signal, why bother using the analog inputs from a CD player, as they felt it was too many conversions to take.

One reviewer did do it that way and like you, found it to be different, but not really better or worse. I'm really looking forward to trying Coax, Toslink and Cinch (RCA) inputs. I have a feeling that they will all sound great in their own way. Different, but great.

All the best,
Nonoise
andy_wonderwall's avatar
andy_wonderwall
18 posts
 

I have the r1000 and are now auditing it with a metronome streamer (coaxial). Before with a computer via USB. Any one interested in my findings let me know. 
KR

andy

ja_kub_sz's avatar
ja_kub_sz
273 posts
 

@ricevs question, if the Technics reference line all use an ADC, and convert everything to PWM "when dealing with analog signals, a 192kHz/24bit high precision A/D converter is used to ensure high performance." Would this then effectually make external DAC's useless?

The DAC goes digital to analog and the Technics goes analog to digital to analog via the ADC, which seems redundant if using an external DAC.

This correct?

nonoise's avatar
nonoise
10,823 posts
 

A lot of reviewers took it as conventional wisdom that using analog outs on the source would be redundant if everything is converted to digital in the Technics. Michael Lavorgna (twitteringmachines.com) tried it both ways and found he preferred some one way and some the other. 

He implied not to overthink it and just enjoy the best presentation you like. I got the impression that it's going to be different from CD to CD.

All the best,
Nonoise

More to discover