Compare the SM70 MK2 to the SM70 Pro

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SM70 MK2 and SM70 Pro

SM70 MK2 (top) and SM70 Pro

SM70 Pro and SM70 MK2 (right)

SM70 MK2 (top) and SM70 Pro

SM70 MK2

SM70 Pro

SM70 Mark 2 and SM70 PRO Comparison

SM70 Mark 2

SM70 PRO

Depth

Height

$980

$1179

25W x2 ( 8 Ohm loads)
40W x2 (4 Ohm loads)

3 Ohm

1) As the name implies, the PRO is for audio professionals who run the amp day and night, and  who sometimes need to drive low impedance loads. The PRO has double output MOSFETS (total 4 pairs)

2)  The Mark 2  can fit a standard United States Flat Rate box if the front panel handles are removed. These handles are mostly for cosmetics and removing them would not affect the performance of the amp, but will allow the amp to fit into the Flat Rate box, thus qualifying for the special low rate (about US $58 to ship to anywhere in the world  that postal service is available)