|Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.|
Please consider donating to help us continue to serve you.
Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
||Thread Tools||Search this Thread|
|13th May 2009, 05:44 PM||#1|
Join Date: Apr 2007
Pioneer AX10Ai AV Amplifier DAC Queries
query regarding the criticality of op-amp selection at different points within the audio chain please.
I've been reading these forums for a while.
AX10Ai (59TXi in US) - has the following from looking at the schematics from Pioneer (which are very informative) and looking at other sites
for each channel
PCM1704 (quite high end in all accounts)
5534 op-amp for I/V converter purposes (next to the DAC)
JRC2068 op-amp post PCM1704 (as a filter)
then a single OPA2134 at the pre-out stage
it confuses me - why in a high end amp they'd go to the expense of an expensive DAC, a decent op-amp at final (pre-out) stage - but then use JRC2068s post the DAC.
what I'm interested in - does quality of the op-amps depend on their particular purpose required of them in the circuit.
and what would lead them to use such an odd mix - or is it just to do with cost ?
thanks for an info,
|Thread Tools||Search this Thread|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Refurbing Quad ESL-57....Some Queries!||Fanuc||Planars & Exotics||14||2nd January 2012 12:12 PM|
|Marantz SC-80 / SM-80 repair queries||Low Orbit||Solid State||2||26th May 2010 07:36 PM|
|Aleph 30 queries.||Bobken||Pass Labs||3||11th April 2006 06:14 PM|
|SAA7220 queries||ash_dac||Digital Source||0||30th December 2005 05:46 PM|
|LspCAD active xo queries||tcpip||Multi-Way||5||12th July 2004 03:17 PM|
|New To Site?||Need Help?|