The Rikstone C15a  Reverb is a one channel version of the Rikstone C15. The amp consists of one 12AX7 preamp channel which has been extended with a spring reverb.  I have reused a cabinet of a commercial amp manufacturer. This is one of the smallest cabinets on the market  where a 12" speaker can be used.

Technical data:

Inputs: 2 guitar, 1 speaker, 1 Foot pedal input
Outputs: 8 Ohm
Controls: VOL, VOL BOOST (p/p), CAP SWITCH (6 pos), BASS, 
TREBLE, REVERB, REVERB ON/OFF (p/p),  CUT, 
MASTER, MASTER By-Pass (p/p)
FOOT PEDAL BOOST LEVEL, POWER ON/OFF,
Tubes: 4 x 12AX7, 2 x EL84
PT: EDCOR
OT: EDCOR
RT: TF22921
Reverb tank Accutronics Short 3-Springs tank
Speaker: Celestion G12H 8 Ohm from 70's
Rectifier: Semiconductor diodes
Schematics: Power Supply
Preamp
Power amp