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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Re: OPA2134 vs OPA2604 vs OPA637 posted by Ehien on January 30, 2002 at 18:29:43:
for the moment, anyway- OPA637.After 24hr of burn in (power on but no music playing) I compared the dual-wired OPA637 pair to OPA2134. The differences were much more subtle than the ones between say the groups of OPA2604/2134/637 and OP275/5532/AD746/AD823. I had to listen longer to gradually realize the differences.
OPA2134 sounded more impactful but a bit leaner, especially when compared to OPA637 (not so compared to most other opamps). With the right music 2134 can bring a right amount of excitments.
On the other hand, OPA637 had the quality that draw you in. It had more body compared to 2134 and sounded warmer as mentioned earlier. Sometimes it seemed to lack a little bit of high frequency engery/extension, but it could also be that the treble is now smoother. I plan to leave the dual 637 on my phono amp and do a longer term audition.
By the way throughout this test Classic Record's Kind of Blue reissue was used as the source. The setup was Grado Platinum cart-Rega RB300 arm-Rega Planar 3 table-Lehman Black Cube phono stage-C-J CAV-50 integrated-B&W Matrix 802s3 speakers.
A real winner might not be confirmed until more LPs and types of music are played.
-Ehien
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Follow Ups
- okay, and the winner is... - Ehien 01:42:40 01/31/02 (15)
- Re: okay, and the winner is... - eagle1 07:44:50 01/31/02 (14)
- Re: okay, and the winner is...My own test - eagle1 18:48:19 02/02/02 (3)
- LT1115 - Ehien 11:43:23 02/04/02 (0)
- Re: okay, and the winner is...My own test - mlloyd1 19:41:06 02/03/02 (1)
- AD8610 - Ehien 10:44:40 02/04/02 (0)
- stability of 637 - Ehien 09:33:53 01/31/02 (5)
- Re: stability of 637 - eagle1 10:58:58 01/31/02 (4)
- MTBF??? - capslock 13:52:58 02/01/02 (1)
- Re: MTBF??? - eagle1 20:44:56 02/01/02 (0)
- Re: stability of 637 - Ehien 13:37:06 01/31/02 (1)
- Yes, you understand :-) (NT) - eagle1 13:52:57 01/31/02 (0)
- Re: okay, and the winner is... - Thorsten 09:02:53 01/31/02 (3)
- Re: okay, and the winner is... - eagle1 11:14:12 01/31/02 (2)
- Re: okay, and the winner is... - capslock 13:56:50 02/01/02 (1)
- Thanks for the tips, Eric. (NT) - eagle1 20:57:37 02/01/02 (0)
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