The tweaked RCA setup is reasonably easy to build, is not especially expensive, and sounds very good. It also has the ability to drive downstream loads, including recording devices.
There are all sorts of good designs available. All require meticulous attention to the grounding scheme, lest hum rear its very ugly head.
There are all sorts of good designs available. All require meticulous attention to the grounding scheme, lest hum rear its very ugly head.
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My best of these, solar mm phono amp, mini-me, mini-me second, phonodude, project tube box se, yaqin ms-12b, pacific phono pre is the sound part of the sound and comfort amp. It has great power supply, pcb design, easy to get parts. And super sound with no noise or humm. My vote for 1 and 3.
For 2 i can recomment the solar mm phono pre.
For 2 i can recomment the solar mm phono pre.
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TubeValve Itch by Salas great sound & as always great support from Salas, not easy & not cheap but worth every penny & effort to make it.
Valve Itch phono
Mine used E283CC in place of 6N2PEV & 7N7 in place of 6SN7. If you want all Russian could be used 6H8C in place of 6SN7 and in place of 6N2PEV can be used 12AX7 if I remeber well.
Solid state Simplistic NJFET RIAA two version folded and unfolded, the folded version with GB both well documented & supported by Salas.
Simplistic NJFET RIAA
Valve Itch phono
Mine used E283CC in place of 6N2PEV & 7N7 in place of 6SN7. If you want all Russian could be used 6H8C in place of 6SN7 and in place of 6N2PEV can be used 12AX7 if I remeber well.
Solid state Simplistic NJFET RIAA two version folded and unfolded, the folded version with GB both well documented & supported by Salas.
Simplistic NJFET RIAA
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For best sound tube only i like to promote phonodude from triode dick.
Audio Creative PhonoDude - Audio Creative Shop
Phonodude koifarm edition
Ronny
Audio Creative PhonoDude - Audio Creative Shop
Phonodude koifarm edition
Ronny
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2 from diyaudio
There are 2 contributors to this webpage with recent designs that I have seen.
SYclotron Audio | His Master’s Noise Phono Preamp
Merlin Blencowe has one in his book. Designing High-Fidelity Valve Preamps by Merlin Blencowe (Hardcover) - Lulu
have fun.
richard
There are 2 contributors to this webpage with recent designs that I have seen.
SYclotron Audio | His Master’s Noise Phono Preamp
Merlin Blencowe has one in his book. Designing High-Fidelity Valve Preamps by Merlin Blencowe (Hardcover) - Lulu
have fun.
richard
Koifarm, do you have any more info on the opamp+tube schematic you posted? I've been thinking about doing something similar for fun (opamp RIAA + tube voltage gain).
Look at this thread: Sound & Comfort MC/MM Phono preamp
You can use a lot of different opamps and tubes.
You can use a lot of different opamps and tubes.
I'd like to try this with the 6Н17Б (6N17B) or 6Н21Б (6N21B) subminiature Russian triodes, would be a lovely and compact build. Need to pick up another turntable to have an excuse to build one
6n17b has high microphonics (75mv) 6n21b is better choice(15mv).
I have build mm phono stage with 6n16b and 6n28b.
Schematic looks great. Looks like TCJ signature.How does the power supply looks like? Is there photo's and/or building thread or site?
I have build mm phono stage with 6n16b and 6n28b.
Schematic looks great. Looks like TCJ signature.How does the power supply looks like? Is there photo's and/or building thread or site?
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In current rotation (hat tip Stereophile) I am using the stock Adcom GFP565 circuit downstairs --easy to replicate -- and a Liberty Audio phono pre which is an Erno Borbely design upstairs in the library/listening room.
Not that I want to say that it doesn't matter, but the recording matters much more than the phono preamp, cartridge and everything else between the ears. (OK, within limits!)
Not that I want to say that it doesn't matter, but the recording matters much more than the phono preamp, cartridge and everything else between the ears. (OK, within limits!)
See the work I put up in this thread on phono termination:
Phono Termination Calculations and Calculator
Can I use the 2C51 or the WE 396A instead of the 6n3p ?
Yes. Or the 5670. I just find the 6N3P is better especially for $1 each. You can use 6N1P as well, but obviously the pinout is different. You could also use a 12AX7 instead of 6N2P (but why?!).
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