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7. TUBES
7.1. REMOVING THE GRILLE
To remove the grille:
1. For your own safety, switch the amplifier off using the on/off switch.
2. Release the two M4 socket head bolts on the right and left of the grille.(Scope of delivery
includes an allen wrench)
3. Pull the grille upward to remove. (The nuts that these bolts screw into are the captive type.
They will not fall into the casing when fully unscrewed.)
7.2. TUBE LAYOUT
Output tubes: V1 - V4:
6550 fitted as standard
Possible alternatives are KT88, 6L6, and KT66
V1
+
V2
left
channel
V3
+
V4
right
channel
Driver tubes:
V5
ECC83 (E83CC)
= input tubes
V6
ECC88 (E88CC, 6922) = driver tubes
both channels use the V5 and V6 output driver tubes
Summary of Contents for V70
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