Adopt the two-sided PCB of the 2 oz, and plate with gold 1 u thicknesses completely SIZE:70.5mm*81.5mm(t=1.6mm) Part list. VR is not including in kits,we've sell it hifidiy ALPS 100KA*2 type27(blue) or hifidiy ALPS 100KA*2 type16. we've sell it Dual Regulated Power Supply Kit of (ACDC-02+KZ+ER206) or Kit of Dual Positivie PS/Regulator) We've sell it The wreath a transformer 87VA new(110V/220V) or The wreath a transformer 120VA(110V/220V) or The wreath a transformer 108VA(110V/220V) or A layer silicon steel cover EI transformer(110V/220V,for PRE AMP< PCB only.