In Reply to: hot amp switch box posted by vinnie2 on June 6, 2017 at 15:18:52:
I listened to both amps for several hours last night and a couple of hours this morning with all different kinds of music. All I can say is that with the volumes carefully balanced I could not hear any difference between them except a little stronger bass on the 6bq5 amp. When I pushed the button to switch amps, if I had not seen myself make the change I would not have known it had been made. There was no audible difference. This was not what I had expected when I set up this experiment, but it does match the results I got one other time with two different amps. Not exactly the same setup, but the same principle. I kind of think it is the fact that they are both SE amps that is the main reason.
I have also read in several places that in blind testing of amps most people can not tell one amp from another. Going to have to test that theory, so I am going to build one of these 6bq5 amps to use in my system and dismantle the 813 for parts. Then I will build a simple PP amp (6v6 maybe?) and do the same test between the two of them and see what happens. If I don't hear any difference then I think I will be upset, because it will mean I have been chasing a rainbow all these years. Then again, maybe not, because it sure has been a lot of fun.PS
Just decided I really should do the same A/B between the 6bq5 and my 26/26/45 all dht amp and see what I hear before I do anything else. I will report back after I have done that test.
Edits: 06/08/17 06/08/17
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Follow Ups
- final update .... - vinnie2 05:46:27 06/08/17 (22)
- RE: final update .... - TomWh 08:04:25 06/09/17 (3)
- RE: final update .... - vinnie2 15:13:22 06/09/17 (2)
- RE: final update .... - TomWh 11:02:30 06/10/17 (1)
- RE: final update .... - vinnie2 14:55:52 06/10/17 (0)
- RE: final update .... - Triode_Kingdom 08:22:30 06/08/17 (17)
- RE: final update .... - vinnie2 09:36:37 06/08/17 (14)
- RE: final update .... - Triode_Kingdom 09:59:53 06/08/17 (13)
- RE: final update .... - vinnie2 14:01:32 06/08/17 (12)
- RE: final update .... - cpotl 07:37:23 06/09/17 (11)
- RE: final update .... - vinnie2 13:05:02 06/09/17 (10)
- RE: final update .... - deafbykhorns 04:01:28 06/10/17 (8)
- RE: final update .... - vinnie2 04:34:31 06/10/17 (7)
- RE: final update .... - Triode_Kingdom 08:46:03 06/10/17 (6)
- RE: final update .... - vinnie2 14:40:04 06/10/17 (5)
- RE: Misunderstood - deafbykhorns 16:13:20 06/10/17 (4)
- Engineering reasons - Tre' 07:27:58 06/11/17 (0)
- RE: Misunderstood - vinnie2 18:42:18 06/10/17 (2)
- RE: Misunderstood - elblanco 19:50:04 06/10/17 (1)
- RE: Misunderstood - vinnie2 03:03:40 06/11/17 (0)
- RE: final update .... - vinnie2 13:26:50 06/09/17 (0)
- Yep - 1973shovel 08:36:34 06/08/17 (1)
- RE: Yep - vinnie2 09:37:54 06/08/17 (0)