I have found in all gear digital may be the only exception, you buy a good piece of used gear and have it modded . I have worked with technicians gor some 20 years now and what most people donot realize their $5k preamp for example has less then $1000 of actual psrts inside, and parts quality average at best.
Capaciyors, resistors wiring, transformers and other parts , even thjngs like gold plated copper Teflon tuse sockets better connectors and copper iec input
Noticeable sonic improvements 1500 in upgrade parts would make your used
Amp,preamp a close to $10k product like putting in a Nascar engine in your family car.it is cumulative . I have a Pass labs F6 build with A Nelson Pass
Schematic he allows and just made it a dual mono in one chassis incredible results , find a well respected tube preamp and have it rebuilt ,same with speakers redo the Xover night and day results. From $10 stock Solen capacitors to Premium VH caps Audyn ,Jupiter, Mundorf for example.if you have any specific questions drop me an email.good luck.
Capaciyors, resistors wiring, transformers and other parts , even thjngs like gold plated copper Teflon tuse sockets better connectors and copper iec input
Noticeable sonic improvements 1500 in upgrade parts would make your used
Amp,preamp a close to $10k product like putting in a Nascar engine in your family car.it is cumulative . I have a Pass labs F6 build with A Nelson Pass
Schematic he allows and just made it a dual mono in one chassis incredible results , find a well respected tube preamp and have it rebuilt ,same with speakers redo the Xover night and day results. From $10 stock Solen capacitors to Premium VH caps Audyn ,Jupiter, Mundorf for example.if you have any specific questions drop me an email.good luck.