⭕ The circuits are original and untouched Amplifier 1203 does not have a tube shield near outputs it never did they added this later Nice replacement tube cages mint I have used these amps for many years trouble free There are a few scratches and small defects here and there all minor A few hairline scratches on one faceplate and a couple of 1/16 tiny nick Transformer top side paint nice a few marks The Silk screening is excellent The chassis paint is very nice with only minor flaws These show very well All original heavy Marantz transformers Tube bias controls and AC and DC balance controls work flawlessly Front speaker attachment Marantz Logo cover plates present and in good condition Excellent working amp hold good bias Tubes Newer dual quad sets of JJ KT77 matched outputs 8x great sounding tubes better than the old tired Mullards in them. (30 hours approx) Vintage 6cg7 RCA-Tung sol Vintage Amperex made in Holland 6DJ8 driver tubes 4X matched Serial # 1709 and 1203 Since it is a used electronic piece and over 40 years old it is they are sold AS-IS but guaranteed working upon arrival there old and may need some service again down the road