[Vinnie R.]

Hi Guys,

Thanks for your posts on tuberolling with LIO.

I'd love to compare the Telefunken E88CCs that TomS and Timbana are using
with the Telefunken E188CC's (7308) that Mitch751 is using! 

I'm sure some of you know this already, but I just want to post for clarification:

From lower grade to higher grade:

- 6DJ8 is equivalent to an ECC88
- 6922 is equivalent to an E88CC
- 7308 is equivalent to an E188CC

Other tubes that are also compatible with LIO Tubestage:

- 7DJ8/PCC88 (a 7V filament version of a 6DJ8/ECC88 that also works fine with LIO)

- 6N23, 6H23 (Russian 6922 equivalents)

- 6N11 (Chinese equivalent)

- 6GM8/ECC86 (low voltage equivalent to 6922 that works fine with LIO as well)

- Mullard CV2492 / CV2493 (equivalent to 6922 / 7308)

Vinnie

[Vlad_Bath]

Hi Guys,

Thanks for your posts on tuberolling with LIO.

I'd love to compare the Telefunken E88CCs that TomS and Timbana are using
with the Telefunken E188CC's (7308) that Mitch751 is using! 

I'm sure some of you know this already, but I just want to post for clarification:

From lower grade to higher grade:

- 6DJ8 is equivalent to an ECC88
- 6922 is equivalent to an E88CC
- 7308 is equivalent to an E188CC

Other tubes that are also compatible with LIO Tubestage:

- 7DJ8/PCC88 (a 7V filament version of a 6DJ8/ECC88 that also works fine with LIO)

- 6N23, 6H23 (Russian 6922 equivalents)

- 6N11 (Chinese equivalent)

- 6GM8/ECC86 (low voltage equivalent to 6922 that works fine with LIO as well)

- Mullard CV2492 / CV2493 (equivalent to 6922 / 7308)

Vinnie

A minor correction, if I may. As far as I know, 6N11 is Chinese equivalent of the Russian 6N1P (6H1n), which is not exactly equivalent to ECC88, but is close enough to be a replacement in many circuits (given the power supply is able to provide higher heater current). Due to its differing parameters 6N1P provides a somewhat different sonic flavour to an ECC88, and is preferred by some listeners. It may be worth mentioning, that in some old Russian tube manuals 6N1P is presented as a noval tube developed as a substitute for the octal 6N8P (which itself is a 6SN7 drop-in replacement).

Regards,
Vlad

[Vinnie R.]

A minor correction, if I may. As far as I know, 6N11 is Chinese equivalent of the Russian 6N1P (6H1n), which is not exactly equivalent to ECC88, but is close enough to be a replacement in many circuits (given the power supply is able to provide higher heater current). Due to its differing parameters 6N1P provides a somewhat different sonic flavour to an ECC88, and is preferred by some listeners. It may be worth mentioning, that in some old Russian tube manuals 6N1P is presented as a noval tube developed as a substitute for the octal 6N8P (which itself is a 6SN7 drop-in replacement).

Regards,
Vlad

Hi Vlad,

I believe 6N11 was a Chinese equivalent to Russian 6N23 / 6H23 (not 6N1P).

6N1P is not suited for LIO's Tubestage, as the heater current required is approx. double and we
use a constant current source set for the 6922 current (approx. 330mA).

I believe the heater current for 6N11 is 340mA (very close to 6922 heater current of 330mA, and there usually a +/- 10% with these
figures anyway).  Yes, "close enough" parameters where 6N11 should work fine in place of 6922 in LIO's Tubestage.

Thanks,

Vinnie