One of my guys modded the power supply in his 1200. He does not advocate the outboard power supply, though:
I am following a combination of Kevin's and what my friend suggested. KAB's power supply responded very favorably to cryo'ed power cords and changing the DC cable from the stock 24 ga to 18 ga solid core was phenomenal. All the internal DC cabling in my 1200 will be rewired by Robert of Ridge Street Audio. Robert wants to use 12 ga solid core silver wire--cryo'ed, of course. he aslo wants to see if the power supply can be revved up further. I think it will be cost effective to send it to cryo treatment.
Anyway, the KAB modded MK2 is pound for pound THE best buy in analog reproduction. I have been aware of Alex's project and as time goes on more and more people are taking the plunge and going for the "creature on steroids".
Alex, have you listened to the Teres? It seems to me that in the under $5K category that's the only other TT worth checking out.
I have heavily reworked my 1200 and it's pretty insane. Don't pay too much for this power supply if that's what it is because there is little to it. The main (theoretical) advantage might be in getting the mains power transformer (very well shielded in the 1200) out of the chassis, although I notice zero 60 Hz hum with a Denon high gain moving coil pre-preamp with my 1200. 60 Hz hum would be transformer noise as opposed to 120 Hz "buzz" which is the sound of a noisy diode(s) in the bridge rectifier. Shottkys eliminate this. Also there is a major advantage to leaving the power supply inside. Because it is virtually riding on the motor coil windings, the impedance is practically zero and so minute current surges supplied to the motor by the power supply when speed corrections are called for (such as on the rise of a slight warp when the motor literally has to lift the arm) are instantaneous. If the power supply is too far away and or the impedance between it and the motor is higher than it should be for any reason (such as thin cabling), then the speed correction response time will be slowed and wow (especially) and perhaps flutter will increase dramatically. This could be audible on recordings such as piano or violin, depending upon the degree. This exact same thing happens in power amps where the power supply's load is now the output transistor/speaker interface instead of the motor. That's why McCormack and others place their filter caps directly beside the output transistors on the same pcb (less than an inch or two away) instead of running wires from ones placed somewhere else such as in the middle of the chassis.
I am following a combination of Kevin's and what my friend suggested. KAB's power supply responded very favorably to cryo'ed power cords and changing the DC cable from the stock 24 ga to 18 ga solid core was phenomenal. All the internal DC cabling in my 1200 will be rewired by Robert of Ridge Street Audio. Robert wants to use 12 ga solid core silver wire--cryo'ed, of course. he aslo wants to see if the power supply can be revved up further. I think it will be cost effective to send it to cryo treatment.
Anyway, the KAB modded MK2 is pound for pound THE best buy in analog reproduction. I have been aware of Alex's project and as time goes on more and more people are taking the plunge and going for the "creature on steroids".
Alex, have you listened to the Teres? It seems to me that in the under $5K category that's the only other TT worth checking out.