I'd be surprised if they were much different. Sugden seems to prefer simple topologies which means they probably just stuffed a volume pot and source switches in front of a power amp. It's possible there's some kind of front end on it, but given the low input impedance it seems unlikely.
What is the input impedance of the Sugden A21aP power amp?
I have a wonderfully sounding class A power amp, essentially the power section from the revered Sugden A21a (the 90's version).
But I have been searching wide and far for specs on the input impedance as well as the power output rating on a 4 ohm load (it's 25 wpc into 8 ohm).
Can anyone help? I don't have access to measuring tools.
The reason I want to know is that I would like to match it with my Audio Note M1 tube preamp, which has a high output impedance of between 2,5 and 5 kiloOhms. This translates to a weak bass performance/bass rolloff when playing into the Sugden. With my cheaper transistor preamp, I don't have this issue.
If I know the specs of the Sugden, I can have my Audio Note dealer modify the M1 with a feedback loop to lower its output impedance to match.
But I have been searching wide and far for specs on the input impedance as well as the power output rating on a 4 ohm load (it's 25 wpc into 8 ohm).
Can anyone help? I don't have access to measuring tools.
The reason I want to know is that I would like to match it with my Audio Note M1 tube preamp, which has a high output impedance of between 2,5 and 5 kiloOhms. This translates to a weak bass performance/bass rolloff when playing into the Sugden. With my cheaper transistor preamp, I don't have this issue.
If I know the specs of the Sugden, I can have my Audio Note dealer modify the M1 with a feedback loop to lower its output impedance to match.
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