In Reply to: You are correct there - also they suggest a rather downmarket... posted by Allen Wright on April 30, 2006 at 01:59:15:
Sigma delta DACs require op amps with matched (or at least complementary) characteristics for best results. Substituting the manufacturer recommended op amp with a "better" model will yield different results, but "different" is not necessarily "better".I'm a big believer in implementing the manufacturer suggested analog stage, if the manufacturer took the trouble to provide a "recommendation".
As an example, the CD player that I built uses a "common garden variety" analog stage, and it sounds better (and measures better) than Joe's tweaked Marantz (IMHO only of course on the "sounds better", but it definitely measures better).
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Follow Ups
- What makes you say that? - Christine Tham 04:19:39 04/30/06 (45)
- Re: What makes you say that? - Ted Smith 05:17:31 05/01/06 (3)
- Re: What makes you say that? - Christine Tham 14:06:07 05/01/06 (2)
- I mostly agree - Ted Smith 15:09:38 05/01/06 (1)
- Of course ... - Christine Tham 15:56:44 05/01/06 (0)
- Sigma delta DACs require op amps... - Allen Wright 01:23:08 05/01/06 (40)
- I agree with Allen 100% - Charles Hansen 13:20:17 05/01/06 (14)
- Re: I agree with Allen 100% - Allen Wright 06:27:27 05/03/06 (13)
- Re: I agree with Allen 100% - Charles Hansen 08:28:39 05/03/06 (12)
- You used to be a roadie? - Allen Wright 04:58:21 05/04/06 (11)
- Re: You used to be a roadie? - Charles Hansen 14:58:36 05/04/06 (8)
- Cool! (nt) - Allen Wright 05:46:23 05/05/06 (0)
- PS -- Trivia Question - Charles Hansen 15:00:56 05/04/06 (6)
- Bit of a trick question there, Charles... - Allen Wright 06:17:33 05/05/06 (1)
- Ding, ding, ding! No more calls, please -- we have a winner! - Charles Hansen 08:16:08 05/05/06 (0)
- 1986 - vettracer 18:30:54 05/04/06 (3)
- Good guess, but not correct. - Charles Hansen 22:31:53 05/04/06 (0)
- Next trivia -- Who was Maynard Hershon? - vettracer 18:36:10 05/04/06 (1)
- Re: Next trivia -- Who was Maynard Hershon? - Charles Hansen 22:35:42 05/04/06 (0)
- I've never seen a white Gios - Charles Hansen 14:48:40 05/04/06 (1)
- White Gios... - Allen Wright 05:52:29 05/05/06 (0)
- Re: Sigma delta DACs require op amps... - Christine Tham 02:25:32 05/01/06 (24)
- Re: Sigma delta DACs require op amps... - Charles Hansen 13:22:11 05/01/06 (13)
- Thanks for your insightful and illuminating post ... - Christine Tham 14:11:30 05/01/06 (12)
- Why be sarcastic? - Charles Hansen 16:07:54 05/01/06 (11)
- Why be defensive? - Christine Tham 19:41:15 05/01/06 (10)
- The perfect example... - Charles Hansen 07:27:48 05/02/06 (9)
- Hmm ... I wonder who is being sarcastic ... - Christine Tham 17:23:08 05/02/06 (8)
- Re: Hmm ... I wonder who is being sarcastic ... - Charles Hansen 19:28:37 05/02/06 (7)
- uhmm ... - Christine Tham 22:20:35 05/02/06 (6)
- impartial? - tunenut 09:00:45 05/03/06 (4)
- Re: impartial? - Christine Tham 16:54:57 05/03/06 (3)
- I don't mean to be uncharitable... - tunenut 17:34:15 05/03/06 (2)
- Re: I don't mean to be uncharitable... - Christine Tham 18:18:36 05/03/06 (1)
- I hear what you're saying - tunenut 18:43:06 05/03/06 (0)
- Re: uhmm ... - Charles Hansen 08:29:46 05/03/06 (0)
- Hey, who is "cheapo" and who is "premium grade" in ths analogy? Huh? :-) - Allen Wright 10:19:54 05/01/06 (9)
- Re: Hey, who is "cheapo" and who is "premium grade" in ths analogy? Huh? :-) - Christine Tham 13:52:45 05/01/06 (8)
- Re: Hey, who is "cheapo" and who is "premium grade" in ths analogy? Huh? :-) - Joe Rasmussen 04:57:19 05/02/06 (7)
- The problem - Ozzie 12:48:25 05/07/06 (0)
- Re: Hey, who is "cheapo" and who is "premium grade" in ths analogy? Huh? :-) - Christine Tham 23:55:07 05/02/06 (5)
- )I think focusing on the analog stage after the DAC... - Allen Wright 06:42:51 05/03/06 (4)
- Upgrading vs completely different platform - Christine Tham 16:45:53 05/03/06 (0)
- Allen, you overlooked something on the Pioneer - Charles Hansen 08:34:06 05/03/06 (2)
- That's right, a cheap op-amp! - Allen Wright 04:52:50 05/04/06 (1)
- That's right, a cheap op-amp! - MSG TO CHRISTINE - Mark Hoepfl 22:27:38 05/04/06 (0)