3W Single Ended Class-A Stereo Tube Amplifier – HEATED CATHODE
Does anyone have any knowledge or experience with this amp or design?
Im a newbie learning all I can and this looks very interesting to me.
I have an office desktop (very nearfield and dont listen loudly) system currently with a Naim Unitiqute driving some Harbeth P3esr. However Id like to build myself a cool small footprint tube amp, not sure if 3 watts is enough.
I also do like the EL 84 tube.
Any thoughts?
Thanks
Does anyone have any knowledge or experience with this amp or design?
Im a newbie learning all I can and this looks very interesting to me.
I have an office desktop (very nearfield and dont listen loudly) system currently with a Naim Unitiqute driving some Harbeth P3esr. However Id like to build myself a cool small footprint tube amp, not sure if 3 watts is enough.
I also do like the EL 84 tube.
Any thoughts?
Thanks
"Heated Cathode is just the brand of the project making Company.
ALL cathodes are heated or tube is dead.
ALL cathodes are heated or tube is dead.
I was looking at this design recently on another thread. I included the schematic of a Rim Stereomaster (thread title), and that schematic also included a nice tone stage with ECC83.
I think the main issue with this design is the sensitivity. 100mV is not going to be compatible with much these days. The amp was originally designed for small self contained record players with ceramic cartridges. The design is to beautifully cohesive, I don't think sensitivity can be changed without changing the design. It would be interesting if it could be possible to solve that. I suppose using the volume control as a gain control is an option, but that is not optimal for signal quality.
I think the main issue with this design is the sensitivity. 100mV is not going to be compatible with much these days. The amp was originally designed for small self contained record players with ceramic cartridges. The design is to beautifully cohesive, I don't think sensitivity can be changed without changing the design. It would be interesting if it could be possible to solve that. I suppose using the volume control as a gain control is an option, but that is not optimal for signal quality.
Just noticed this interesting article, from a thread on Vintage Radio UK. It is a previous incarnation of the Mullard 3-3, basted on B8A tubes, and without the DC coupling, though incorporating the other design features. Maybe this could be a simpler starting point for reducing the overall sensitivity?
(Apologies for the orientation of the attachments - they looked OK on my PC)
(Apologies for the orientation of the attachments - they looked OK on my PC)
Attachments
Thank you for the information Hector.
What got my attention from the website is the author states that he turns it into a stereo amp with volume control and is able to drive Wharfdale 10 speakers in his home at 86db sensitivity with low noise. This is something I’m looking for in a smaller footprint for a desktop application. Although being a newbie in this game it may be over my head.
What got my attention from the website is the author states that he turns it into a stereo amp with volume control and is able to drive Wharfdale 10 speakers in his home at 86db sensitivity with low noise. This is something I’m looking for in a smaller footprint for a desktop application. Although being a newbie in this game it may be over my head.