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Cary Rocket 88R bias setting with EL34 tubes?

Hi All,
I have & enjoy greatly a Cary 88R 'Rocket' tube amp combined with a Cary SLP98P preamp, Wireworld Gold Eclipse cables, & Harbeth 7es-2 speakers.
The amps output tubes are Svetlana (New Sensor) 6550, which are quiet muscular in their presentation. As I'm seeking a more relaxed sound, I've ordered some SED EL34 (St.Petersburg) tubes & was wondering what to bias them at?
The amps owners manual states the amp can use EL34, 6550, KT66, KT77, KT88, or KT90 output tubes, but mentions only one bias setting of 200mA.
Is this the same bias setting for all these power tube types, or does the bias setting vary for each different tube type?
Many thanks in advance for any replies.

Best Regards.
halo88

Showing 2 responses by halo88

halo88 OP
6 posts
 
Thank you both for your responses.
Yes Newbee you're correct the Rocket 88R has one bias pot for the four output tubes.
I'll take your advise & email Cary directly, & post their recommendation for others who may have the same question.

Many thanks.
halo88 OP
6 posts
 
Hi All,
This very quick response from Gerald @ Cary Audio Design.

John,

You may also bias EL34's to 200mA's DC for the CAD 808( Rocket 88). Cheers!!!

Gerald Walsh
Cary Audio Design
1020 Goodworth Dr.
Apex, NC 27539
919-355-0010 Ext.105
919-355-0013
www.caryaudio.com
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