Specifications

O W N E R S M A N U A L

Decware High Fidelity Engineering Co., East Peoria IL, USA www.decware.com

After the bias meters are balanced, you can raise or lower the value of them both at

the same time without loosing the balance between them via this control at the rear of

the ampliﬁer.

The range of this control varies with output tubes. The ideal operating point for KT88’s

in this ampliﬁer would be between 60 and 70 milliamps. 80 milliamps should be

considered the absolute maximum. Running any higher will sacriﬁce headroom and

create more heat.

This control may be operated while music is playing at normal listening levels or

below. It is common to set this control every time you change output tubes.

NOTE: This amp is compatible with the Tungsol KT120 power tubes IF the bias is

run at the lowest setting. The KT120 tube causes the bias window to shift much

higher. On the lowest setting it will read 80 milliamps whereas the same setting would

read 50 milliamps when a KT88 was used. Run the KT120’s at 80 milliamps.