In Reply to: Why Passive Pre ? posted by Interstage Tranny on October 6, 2011 at 17:15:58:
A headphone amp can easily drive a 600-ohm attenuator, the kind that was common in studio practice many decades ago. At 600 ohms, a passive control should have no problem with driving cable capacitance. Kind of a cool idea, make the headphone amp the switching and buffer stage and follow it with a passive 600 ohm attenuator.
The REALLY old stuff had crossovers for biamping that were passive 600 ohm, as well as those great passive equalizers if you want tone controls. Tons of really great classic designs waiting for an application, and now there are many headphone amps available to drive them.
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Follow Ups
- An interesting idea... - Paul Joppa 21:16:30 10/06/11 (9)
- I do not believe that it is "more" stages that makes it better. - Chris O 05:55:44 10/07/11 (8)
- RE: I do not believe that it is "more" stages that makes it better. - Paul Joppa 13:21:01 10/07/11 (1)
- This point is the important one regarding tone quality - kurt s 02:59:02 10/08/11 (0)
- I assume this 6V6GT was triode-connected, correct? (nt) - JJ Triode 10:10:08 10/07/11 (2)
- Yep, triode, sounds amazing. - Chris O 11:26:33 10/07/11 (1)
- RE: Yep, triode, sounds amazing. - Tre' 13:15:44 10/07/11 (0)
- Just don't be afraid to try more stages; the sum may make it sound better... - Interstage Tranny 06:59:46 10/07/11 (2)
- RE: Just don't be afraid to try more stages; the sum may make it sound better... - morricab 15:54:59 10/10/11 (0)
- RE: Just don't be afraid to try more stages; the sum may make it sound better... - Chris O 07:15:18 10/07/11 (0)