So I'm pretty much planning on buying either one of these in the next couple weeks. They're priced only $30 apart so I figured "oh well Sherbourn is supposed to be Emotiva's higher end, right?" After closer inspection of their specs I'm not totally sure...
Sherbourn PA 5: http://www.sherbourn.com/collections/theater/products/pa5200
Emotiva XPA-5: http://shop.emotiva.com/collections/amplifiers/products/xpa5
Sherbourn vs Emotiva:
Power Output (rated power; THD < 0.15%
300 watts / channel (x5); all channels driven; into 4 Ohms.
200 watts / channel (x5); all channels driven; into 8 Ohms.
Power output (all channels driven):
300 watts RMS @ 4 ohm (0.1% THD
200 watts RMS @ 8 ohm (0.1% THD
Rated Power Bandwidth (at rated power; 8 Ohm load):
20 Hz to 20 kHz + /- 0.05 dB.
Rated power bandwidth: 20 Hz to 20 kHz with less than .05 dB deviation at rated power
5 Hz to 80 kHz
(+ 0 / - 3 dB).
Broadband frequency response (-3 dB): 5Hz to 150kHz
Signal to Noise Ratio (8 Ohm load):> 83 dB
at 1 watt (A-weighted).> 105 dB
at rated power (A-weighted).
Signal to Noise Ratio:
1 watt: > 97 dB
Full power: >111 dB
1.2 kVa toroidal power transformer.90,000 uF
of storage capacitance.
Transformer rating: 1,200VA
Secondary capacitance: 60,000uF
17” wide x 7.75” high 19” deep. Weight: 58 lbs
(net); 71 lbs (boxed).
unboxed: 17” wide x 7 3/4” high x 19” deep
boxed: 23 1/2" wide x 12" high x 24 3/4" deep
Weight: 72.6 lbs
(83.8 lbs boxed)
Warranty: 10 years
Warranty: 5 years
So, if I look at these numbers it seems like Emotiva is winning on almost all of them aside from secondary cap. The big thing that I assume a lot of what you guys would separate is the difference in warranty. Which if all numbers are a wash is the best reason to go with Sherbourn.
Anyways, I tried like hell to find some actual measurements of the Sherbourn unit and came up dry. There are some for emotiva here: http://emotiva.com/resources/media/xpa5/xpa5_8ohm.pdf
If any of you find anything for Sherbourn please let me know.
The two biggest numbers make me shy towards Emotiva is that it looks like it measures better THD (<0.1% as opposed to <0.15%) and the SNR: >97dB as opposed to >83dB. I also like that the emotiva is heavier