No Pass Labs amps have servos. DC coupled and stay within mV’s.
Some Threshold product had servos.
Then do all the Pass Labs amps have unity gain at DC,
after any input coupling capacitor? Probably none actually amplify DC.
Last edited:
No Pass Labs amps have servos. DC coupled and stay within mV’s.
Some Threshold product had servos.
HPA-1 has a servo? I think I see it.
Then do all the Pass Labs amps have unity gain at DC,
after any input coupling capacitor? Probably none actually amplify DC.
Current amps are full gain at DC no caps. The .5 had input caps. The integrated amps have a cap on the pre to the power section.
The HPA-1 does have a servo. No power amps do.
Current amps are full gain at DC no caps.
That's very impressive, even with scrupulous input device matching.
Would not every balanced design run without an exit-cap?
"Capacitors in the signal path" are no problem regarding sound. Use little ones, NO big MKP or other big stuff.
The 1. advantage of balanced designs is the outcrossing of psu-"fluctuations": use ONE psu; do not add psu-"fluktuations" per add psu's;-)
The big problem are many psu's and many parts and many gain-stages and a lot of feedback-loops ... and complementary-transes-designs;-)
And poor sources and (multiway-)speakers;-)
PassDiy
Ralf Metzger - Aleph X
High Power Aleph-X Monoblock – Garbz Electronics
ALEPH-X - Pass Labs Clone Class-A amplifier PCB & schematic
"Capacitors in the signal path" are no problem regarding sound. Use little ones, NO big MKP or other big stuff.
The 1. advantage of balanced designs is the outcrossing of psu-"fluctuations": use ONE psu; do not add psu-"fluktuations" per add psu's;-)
The big problem are many psu's and many parts and many gain-stages and a lot of feedback-loops ... and complementary-transes-designs;-)
And poor sources and (multiway-)speakers;-)
PassDiy
Ralf Metzger - Aleph X
High Power Aleph-X Monoblock – Garbz Electronics
ALEPH-X - Pass Labs Clone Class-A amplifier PCB & schematic
Last edited:
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
- Home
- Amplifiers
- Pass Labs
- Is there a Nelson Pass amp with servo loop?