Yes the squeezeboxes have several onboard small smps regulators the 5v is not enough for all its circuits .
Anyone having THD + noise measurement out of the analog output of squeezebox with the original psu vs an aftermarket unit ? That's exactly what we want to see . And afaik no one has provided that everyone's just assumes that aftermarket psu is so much better due to the usual testimonials and sighted testing ( as the information content of a testimonial on a audiophile site is 0 , the amount of positive testimonials does not matter 0*x=0) But most audiophiles uses the digital output to a DAC anyway ? Johns supply design actually addresses another issue noise leaking back to the AC mains , here both kinds of supply can be really bad . And some amps and stuff can pick this up . Getting rid of the classical diode bridge and transformer can't be bad . The switchmode way to rectify is way faster if you followed that by some good very fast regulators that can't be bad . But they got bad rep . Also the compete design is a factor . My Meridian gear is full of smps supplies to no ill effect . The exception is the power amps in the active speakers .( and Meridian does not design the smps in house they are bougth ) The "big expensive power supply " is alway better is yet another audiophile myth . There is such a thing as good enough supply for the intended use case . If the circuits don't need more current and the noise suppression in the design is good enough . Ou will reach a point where nominally better supplies actually does not improve the product anymore ( except in sighted listening tests ) . Yes I do have an aftermarket supply ;) ( it's in my signature ,bougth it in my more audiophile days ). As I remeber slimdevices did deliver a rather crummy 230v supply to the SB3 that unit was not up to any moder spec . Logitech later changed that and the late SB3 aka classic where delivered with the same supply as Touch which is a better speced compliant unit . There is a reason PSU is a commodity that is bougth for outside suppliers . It does not effect product performance that much , it's not rocket science and reduces cost . What do you make of NAIM's whole MO ;) that brand lives by selling expensive boxes with outboard psu in more expensive boxes.... -------------------------------------------------------------------- Main hifi: Touch + CIA PS +MeridianG68J MeridianHD621 MeridianG98DH 2 x MeridianDSP5200 MeridianDSP5200HC 2 xMeridianDSP3100 +Rel Stadium 3 sub. Bedroom/Office: Boom Kitchen: Touch + powered Fostex PM0.4 Misc use: Radio (with battery) iPad1 with iPengHD & SqueezePad (spares Touch, SB3, reciever ,controller ) server HP proliant micro server N36L with ClearOS Linux http://people.xiph.org/~xiphmont/demo/neil-young.html ------------------------------------------------------------------------ Mnyb's Profile: http://forums.slimdevices.com/member.php?userid=4143 View this thread: http://forums.slimdevices.com/showthread.php?t=82648 _______________________________________________ Touch mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/touch
