The Rikstone H5P is based on Fender Princeton 5F2-A circuit  which has been modified to procude a more unique sound. To the amp has beed added a Variable Voltage Regulator (VVR) which makes playing possible even in the apartment building. 

Technical data:

Outputs: 8 Ohm
Controls: VOLUME, TONE, VVR, Negative Feedback bypass
Tubes: 1 x 12AX7, 1 x 6V6
PT: TT Torodial 50 VA
OT: Hammond 125DSE
Rectifier: SS
Schematic: Fender 5F2-A