Lowther LL15
The LL15 mono-block was manufactured from 1959 to 1965.
Valve line-up: 2 X EL34, 2 x ECC82, 1 x EZ81
Power output: 15 watts
Frequency response: 20 Hz - 40 KHz +/- 1 dB
Size: 12 X 6 X 6 inches
Original price: £27-10s-0d