Just checked out this thread- great info. I'm thinking to use the hifimediy dac (1853) with the Helder tube buffer and a TK2050 T amp from either Helder or Hifimediy.
I take it the Helder tube buffer will work with the Hifimediy amp?
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I take it the Helder tube buffer will work with the Hifimediy amp?
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Yes, as far as I can tell, it works with any amp and it does a very good job with the right tube. Actually, it does wonders. Here it is playing with a HIFIMEDIY T4.
This is my second Helder tube buffer implementation that I use in a tape monitor fashion, it really adds a lot of richness, detail, and body to the sound. I am using a donor 12 VDC SMPS power supply from a router or modem. It is great for adding to an iPod or some other weak signal as an extra layer of amplification.
The case is from www. mouser.com, you drill all your holes, it is a blank box. Worth every dollar.
I hope version 3 of his buffer is as good or better. This has got to be one of his better products.
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wow. Love it! To be honest I'm worried about my electrical knowledge/skills, so I might wait until you want to sell me yours 😉
I know it's an old thread but relevant to me so here goes...
Would it be a problem to swap the ecc82 with a ecc81?
I know i will loose some gain but other then that?
Would it be a problem to swap the ecc82 with a ecc81?
I know i will loose some gain but other then that?
tube swap
you can swap the tube (ECC82 / 12AU/) to ECC83 / 12AT7 without any problems. the sound will be a bit different, also the sensitivity.
Swap to ECC83 / 12AX7 will create more distortion.
R&D
you can swap the tube (ECC82 / 12AU/) to ECC83 / 12AT7 without any problems. the sound will be a bit different, also the sensitivity.
Swap to ECC83 / 12AX7 will create more distortion.
R&D
Complete schematics for tube buffer
Do you insert you can the complete schematics for this tube buffer.
Thank you and cheers!
Hi M-r Whaleman!
Do you insert you can the complete schematics for this tube buffer.
Thank you and cheers!
Sorry, but this tube buffer is long gone. You might find the tube buffer on eBay still.
Best of luck,
The V4 version of this is out now.
I am not totally sure but there is a lot of tube preamps on ebay for 20 bucks and up.
I am wondering what they sound like.
Like this one - YJ 6N3 Tube Preamplifier Kit New | eBay
I thought without the high voltage needed it wont sound very "tubey"
Has anyone tried them.
Thanks.
Srinath.
I am not totally sure but there is a lot of tube preamps on ebay for 20 bucks and up.
I am wondering what they sound like.
Like this one - YJ 6N3 Tube Preamplifier Kit New | eBay
I thought without the high voltage needed it wont sound very "tubey"
Has anyone tried them.
Thanks.
Srinath.
Tube preamp with 12AU7
Hi
The schematics not understand some things. Electrolytic capacitor of 4700uF/25V should this be connected as in the schematic?
Schematic for power supply relay is not clear, please schematics again a power supply for relay.
Otherwise, this schematics is the tube pre-amplifier with 12AU7, not a buffer, as a gain of about 14x.
The gain of the tube buffer is <1!
thank you and cheers!
Hi
The schematics not understand some things. Electrolytic capacitor of 4700uF/25V should this be connected as in the schematic?
Schematic for power supply relay is not clear, please schematics again a power supply for relay.
Otherwise, this schematics is the tube pre-amplifier with 12AU7, not a buffer, as a gain of about 14x.
The gain of the tube buffer is <1!
thank you and cheers!
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