I have read this threads.
http://www.diyaudio.com/forums/soli...gh-performance-headphone-amplifier-qrv09.html
http://www.diyaudio.com/forums/solid-state/113943-quad-303-triple-cascade.html
http://www.aes.org/tmpFiles/elib/20110424/1091.pdf
http://www.diyaudio.com/forums/solid-state/25172-baxandall-super-pair.html
http://www.diyaudio.com/forums/solid-state/174126-best-topology-no-feedback-classab-buffer.html
http://www.diyaudio.com/forums/soli...llower-diamond-buffer-power-output-stage.html
Who have try this idea?
http://www.diyaudio.com/forums/soli...gh-performance-headphone-amplifier-qrv09.html
http://www.diyaudio.com/forums/solid-state/113943-quad-303-triple-cascade.html
http://www.aes.org/tmpFiles/elib/20110424/1091.pdf
http://www.diyaudio.com/forums/solid-state/25172-baxandall-super-pair.html
http://www.diyaudio.com/forums/solid-state/174126-best-topology-no-feedback-classab-buffer.html
http://www.diyaudio.com/forums/soli...llower-diamond-buffer-power-output-stage.html
Who have try this idea?
Last edited:
I'm not understanding your goal - TPA6120 +/-400 mA, +/-13 Vout is sufficient by itself as an output stage for the majority of dynamic headphone loads
only a few have low sensitivity, Z that requires extra Vswing, bridged output doubles V swing and would drive the Audeze LCD-2 to over 120 dB SPL
the out of production AKG K1000 and the HE-6 are 2 "audiophile" dynamic headphones that require more V than bridged +/-15 Vsupply op amps can provide
for headphones there is no reason to add discrete output unless you need high Vswing - for even the lowest sensitivity dynamic headphones you don't require the current that a triple is used for in power amps
only a few have low sensitivity, Z that requires extra Vswing, bridged output doubles V swing and would drive the Audeze LCD-2 to over 120 dB SPL
the out of production AKG K1000 and the HE-6 are 2 "audiophile" dynamic headphones that require more V than bridged +/-15 Vsupply op amps can provide
for headphones there is no reason to add discrete output unless you need high Vswing - for even the lowest sensitivity dynamic headphones you don't require the current that a triple is used for in power amps
at 400 mA output the TPA6120/THS6012 could drive the output Q directly for ~20 A with hfe ~50 high current BJT output Q (may need to parallel) - triple or Darlington just adds excess poles/delay in the loop
it is always helpful to give load Z, power requirement, supply V specs for amp design advice
it is always helpful to give load Z, power requirement, supply V specs for amp design advice
Last edited:
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.