Next up - my classic "Slim Devices" Squeezebox 3 (I believe this is one of the "first run" units; I was on a waitlist at introduction):
RESULTS: 14305 First 2 columns are the stock SB3+stock wallwart connected to my basement music server by WiFi. Notice that 24-bit data does result in dropping of the noise floor by ~6dB. It looks like the good ol' SB3 internal DAC is capable of about 17-bit resolution when fed with 24-bits. Note that the old Stereophile review from 2006 did not measure 24-bit performance. Second 2 columns are the same setup but with the ethernet (hooked up to my DLink gigabit switch 6 feet away). Essentially no difference compared to the WiFi. Final column is with the SB3 over WiFi but the *SB Touch wallwart*. I see folks here talking about the crappy wallwart (true, the UNIFIVE wallwart looks and feels nasty compared to the one that came with the Touch!). I fed the 24-bit data and the result is essentially the same as the UNIFIVE. Based on these measurements, I don't see any evidence that the Touch wallwart would improve the stock SB3 performace. Frequency Response: 14306 Decent - obviously not as flat as Essence 1 above from 20Hz-20kHz... Noise Floor: 14307 16-bit data obviously not as good as 24-bits. No difference between the WiFi vs. Ethernet groups. CONCLUSION: 1. The SB3 can benefit from 24-bit "hi-res" audio. Whether you can hear the extra 5-6dB is your problem :-) 2. I see no evidence that a Touch wallwart would improve the performance over the cheap stock power supply. 3. No evidence that running in WiFi mode will add any noise to the SB3 output. (Also, no evidence of higher WiFi data latency or possible jitter issues showing up in these measurement.) Next up... SB Touch this afternoon... +-------------------------------------------------------------------+ |Filename: SB3_Noise_Floor.jpg | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=14307| +-------------------------------------------------------------------+ ------------------------------------------------------------------------ Archimago's Profile: http://forums.slimdevices.com/member.php?userid=2207 View this thread: http://forums.slimdevices.com/showthread.php?t=97950 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
