Little Dot Mk Iii Jumpers For Driver Tube-Rolling - Little Dot MK III Reference Manual

Little Dot MK III Jumpers for Driver Tube-Rolling

The Little Dot MK III has three jumper pins (JI) that allow two different types of driver tubes (earlier circuit
versions may have switches or 2 pins). You can access the jumper pins through the amplifier's bottom panel,
and they are located to the sides of the pair of capacitors closest to the front of the amplifier. Please power
off the amplifier when you are doing this.
If the jumper caps are covering pins 1 and 2 (OFF), the following EF95 type driver tubes may be used:

WE403A

5654, CK5654, GL5654, 5591, CV4010, CV5216, CV8246, 6069, CV10442

EF95, M8100, 6AK5W, CV10100, CV8159, CV8225, CV850

6J1
If jumpers are covering pins 2 and 3 (ON) the following EF92 type driver tubes may be used:

EF92, 6CQ6, CV2023, V884, VP6, M8161

EF91, 6AM6, CV10327, CV138, CV1955, CV2195, Z77

CV131, 9D6, W77
Any other equivalents or drop-in replacements for the above-mentioned tubes (both sets) may also be used.
IMPORTANT: Please be careful when setting switches and jumper caps as these are circuit elements and
will be fairly delicate. Using too much force may result in damage!
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