This is probably a "Tommy" question, but I thought I'd post it here in case one of our esteemed AC members can weigh in:I'd like to hear what Maraschino users out there have to say
I was wondering about the differences between the power supplies used for the Maraschino amps. If I recall, there are three: 36V, 48V, and 60V. I believe the latter is a linear power supply, whereas the other two are SMPS. What I wondered about these is as follows:
1. Is there any major sonic difference provided between the 36V and 48V power supplies other than the amount of power supplied to the amp?
2. 60V power supply is a major step up, no? If so, what differences would one notice?
3. Somewhere I noticed that there is an option available for the STM to also power a DAC DAC, requiring one less power supply in the chain. Is that option available regardless of which power supply chosen? Or is it available only for certain power supplies (e.g. 60V)? And, is this option something that has to be ordered at time of purchase? Or can it be retro-fitted?
Thanks in advance for your responses, -dB (a unit measure of noise)
as well, especially those who have heard Maraschinos with multiple power supply types, but here's our official take on the "voltages"....
First, there's a difference in power output....36V Output Power (Maraschino Monoblock):
70Wpc into 8Ω
145Wpc into 4Ω
145Wpc into 2Ω48V Output Power (Maraschino Monoblock):
140Wpc into 8Ω
250Wpc into 4Ω
250Wpc into 2Ω60V Output Power (Maraschino Monoblock):
200Wpc into 8Ω
400Wpc into 4Ω
800Wpc into 2Ω
This, and lots of other related reference information
can be found here:http://www.audiocircle.com/index.php?topic=152409.0
Second, there's a difference in the "idle noise level", but only by a few dB. 48V is a bit quieter than 60V, and 36V is a bit quieter than 48V.
Third, there is a sonic difference giving lower voltage a small advantage when playing at low levels. However, there is more headroom with higher voltage, so....
Fourth, we recommend use of the lower voltage power supplies with higher efficiency speakers.
Recommended power supply per speaker efficiency:
80dB (1W/1meter) to 90dB ---- 60V recommended
90dB to 100dB, larger speakers ---- 60V recommended
90dB to 100dB, smaller speakers ---- 48V recommended
Over 100dB, larger speakers ---- 48V recommended
Over 100dB, smaller speakers ---- 36V recommended
Hope that helps. Also, check out customer reviews
here to see comments on power supply selection:http://www.audiocircle.com/index.php?topic=127654.0
Thanks for your kind post, and have a great weekend.