Vacuum Tube RIAA Phono Preamp Design 

Cool project. I want to build my own tube phono preamp soon. I have two Pickering XV-15/625E carts that I use on my Technics SL-Q2 and Pioneer PL-7. I bought the LP Gear Vivid Line Contact (similar to the Micro Line) stylus replacements and they sound GREAT!

awesome sound quality very well done

Very interesting idea :)

Nice project! Well done.

Please post the complete schematic and PCB layout for this 6U10 phono preamp as well as your power supply for this phono preamp.

how can i order from you a complete finish one including the power supply? thanks.

I used 2 6U10 tubes in a desktop speaker stereo tube amp. I used section 2 for the phase converter. I used a 6J6 tube as the pre-amp tube. I found some 70.7 volt multi-tap transformers to use as output transformers. I found equal inductance taps to set it up in push pull output. It makes around 425 milliwatts clean. and it is really cute. For the high voltage, I used an inverter board from ebay. For filament supply I used a buck converter. The amp is supplied from a 12 volt power supply like they sell to power LED strips. Looks like a laptop charger.

AS a tech for nearly 50 years i commend your creative use of the 6010 tube this way..I would love to build this little phono amp as im in need of one..unless you have the PC board for sale.

a TRIPLE-triode ... i'd never heard of those before. looks good, sounds good. my only worry there is: does that enclosure have any ventilation?

I like that you are using compactrons, we need to continue to utilize the remaining NOS tubes to do our bidding. I experiment myself but usually on guitar amps.

I have used tje 6U10 compactron as a phono preamp but i did not destroy good tube phonics with an op amp. If ypu know you are driving a tube section of 250k input impedance then you have no worries to drive direct from your triode

Turner has an interesting blog ( Australia )..............nice riaa amplifier, sounds good !

Gr8 job. Turned out beautifully. Thnx for sharing, Randy/GA

Very very Good job! my friend . I want to build my own tube phono preamp

Nice project and video, thanks! Love the triple triode. I think the opamp might not be needed. The output stage, a cathode follower, has a low (

Wow! Really enjoyed this! Would like to get two of these boards to build my brother a preamp he needs.

I'd love to build one. Do youy plan to sell the PCB's ??

Reminds me of the active RIAA design by Tim De Paravicini (Luxkit, E.A.R.), in some ways.. Looks sweet and sounds sweet.

Good Job! MM or MC?

Gracias maestro

Cool

𝚙𝚛𝚘𝚖𝚘𝚜𝚖

man this is cool. i would so luv to hear this in my system. audiophiles generally have a strong aversion to opamps. i dont know enough to understand. do you have a link for the ones ur gonna sell?

hey im still interested drop me a line on AK

Best tube preamp video yet!

Great work

u ever put your spare up for sale?

Dont destroy ypur good tube audio by inserting an op amp. Your triodes can drive a preamp quite well. No nerd for op amp. You have destroyed all the good you have done