Ergo Uber-Cole Q

[JoshK]

Can the uber-cole use D3A's in the output spot? I've been eyeing this phono stage, not really wanting to build my own. However, I have plenty of D3A's but no 6688s.

 

[ThorstenL]

Hi,

Can the uber-cole use D3A's in the output spot? I've been eyeing this phono stage, not really wanting to build my own. However, I have plenty of D3A's but no 6688s.

It would need the Bias adjusted. Write to Simon and ask if you can send a pair over to be fitted and the adjustment made, if you buy it.

Note that a D3a will give nearly 6dB more gain.

Ciao T

 

[JoshK]

thanks Thorsten. I somehow thought the mu (triode strapped) was similar but I see it is different.

 

[ThorstenL]

Hi,

thanks Thorsten. I somehow thought the mu (triode strapped) was similar but I see it is different.

It does not mean the D3a cannot be used, just that the circuit needs small chages and that you will have nearly 6dB more Gain.

Ciao T

 

[JoshK]

Also, I noticed that there is one MM input and one MC input. Can they be used simultaneously, with a switch or something. I have two arms and was thinking of using my existing HOMC and obtaining a LOMC for the other arm.

 

[ThorstenL]

Hi,

Also, I noticed that there is one MM input and one MC input. Can they be used simultaneously, with a switch or something.

There is a switch.

I have two arms and was thinking of using my existing HOMC and obtaining a LOMC for the other arm.

Sure...

Ciao T

 

[JoshK]

ordering soon...

 

[JoshK]

Does anyone know what the output impedance of this phono is with the 6688? I purchased the standard one (not modified for D3A as discussed before). I also use the Tram 2 OTL preamp and would like to locate my vinyl setup somewhat far away from rest of system (~4m or so). However, I don't want to compromise the performance too much.

I know the Tram 2 has a Zout of 500ohms, so I could locate the preamp near the phono is necessary, but would rather not.

 

[JoshK]

Bump for output impedance of the Uber-Cole, does anyone know the Zout? Or has the schematic so I can work it out?