Zesto Audio EROS 500 Select
2022
12 |
P a g e
Tubes
Installing the tubes
This unit is compatible with KT88, KT120, KT150 and KT170 output tubes and
only 12AU7/ECC82 input tubes.
Output tubes can go in any socket V1 thru V6. Input tubes V7 & V8.
When installing the 12AU7/ECC82 tubes, be careful not to bend the pins or damage the
9 pin sockets. You should not have to use excessive force. Inserting tubes incorrectly is
not covered under the warranty.
Warning!
The circuit design is
not
compatible
with 12AX7, 12DW7 or any other 9 pin
tube. This will cause damage to the unit.
Warning!
The bias settings are
not compatible
with 6550, KT90’s, KT100’s
tubes.
Because of their lower power rating, they cannot manage the higher current and voltage, which
will cause damage to both the power amp and the tubes. You could cause what’s known as
“Red Plating.”
Important!
The wrong type of the tubes can cause considerable damage.
Any damage caused by tube rolling is
not
covered by the manufacturer’s warranty.
Each
Eros 500 Select ships with a six of KT150’s and two 12AU7
Only KT150 and 12AU7/ECC82 supplied by Zesto Audio are covered under the
warranty. All other tubes are purchased separately and are the responsibility of the
owner.
Warning!
You cannot mix and match output tubes.
All six output tubes must be produced by the same manufacturer. For example, all six
must be JJ or six Tung-Sol or six Gold Lion etc.
All six output tubes must be of the same model type. For example, all six are KT88’s
model, or six KT120’s, or six KT150’s or six KT170’s.
Tip!
The logo on the metal collar and the alignment key on the tube faces forward.
Caution! Do not ROCK the tube,
install straight up and down holding the metal collar.
