Vintage 70's Japan Prince Piggy-1 1 x 8 Solid State Combo Amplifier

In excellent condition and in full working order apart from one feature that is not working correctly, the A440hz tuning control. It makes a sound but it's nearer 390hz so not playing an A. Not a major issue as guitar tuners do a more accurate job, otherwise, it works perfectly and sounds great. Cosmetically, there are a few small nicks to the outer covering but it's well above average for the age.