Reinhard, you are obviously a pro. I am not not sure where the Jfet is located. I would try to upload a picture and perhaps you can point me to the right component?
Don`t get me wrong. Hovland uses a single Fet working on a resistor. My Output stage is a J-fet working on a current source with a higher bias current. Ther are numerous new parts and an updated power supply. Hard won knowledge and nothing to report here.
I heard the HP100 today in my system compared to the VTL TL-7.5 Series III. My recording engineer friend who brought it over heard a bigger difference than I heard, but I thought the HP100 sounded wonderful! It sounded more liquid than the VTL.
I'm surprised the HP100 is not a bigger deal as a vintage component that survived the test of time?
With Zus you are like Dr. Manhattan from Watchmen, experiencing past, present, and future simultaneously. Time in that case is not a linear progression.
(The HP200 was designed to respond to the criticism of no remote on the HP100, but my impression from review research suggests that the HP100 was the purist effort sonically.)
Oh, and the build quality of the HP100 I examined yesterday was fantastic. They seem to trade for about US$2,500. If I find one in museum condition I am buying it.
The hp 100 pre have high output impedance 2.5k- 4.0kohm in the frequency range that not very well with a lot of poweramps be careful. Build quality is very good.
The hp 100 pre have high output impedance 2.5k- 4.0kohm in the frequency range that not very well with a lot of poweramps be careful. Build quality is very good.
Yes, I saw that. It seems to use output transformers, no?
I was surprised it did as well with my 47 foot interconnect run as it did.
From a brief audition at home I cannot be sure I liked it, but the "liquidity" (which is closely related to "breath of life" on vocals) I heard justifies further investigation.
(The HP200 was designed to respond to the criticism of no remote on the HP100, but my impression from review research suggests that the HP100 was the purist effort sonically.)
All I'm saying is: From a brief audition at home I cannot be sure I liked it, but the "liquidity" (which is closely related to "breath of life" on vocals) I heard justifies further investigation.
I think the VTL preamp is excellent. I remain very happy with it.
All I'm saying is: From a brief audition at home I cannot be sure I liked it, but the "liquidity" (which is closely related to "breath of life" on vocals) I heard justifies further investigation.
Yes, I saw that. It seems to use output transformers, no?
I was surprised it did as well with my 47 foot interconnect run as it did.
From a brief audition at home I cannot be sure I liked it, but the "liquidity" (which is closely related to "breath of life" on vocals) I heard justifies further investigation.No transformer
No transformer,a cathode follower tube output stage Hp 100. The phonostage sounds nice a lot amplification 69db switchable. As long you don't need feed the outputsignal to more then one poweramp (not lower 20kohm )all fine.
No transformer,a cathode follower tube output stage Hp 100. The phonostage sounds nice a lot amplification 69db switchable. As long you don't need feed the outputsignal to more then one poweramp (not lower 20kohm )all fine.
No transformer,a cathode follower tube output stage Hp 100. The phonostage sounds nice a lot amplification 69db switchable. As long you don't need feed the outputsignal to more then one poweramp (not lower 20kohm )all fine.View attachment 133060