I find this discussion very interesting. I have an old Parasound H2200 which is getting a little long in the tooth and may be in need of a refresh (It sounds good to me but I reently had a hum - not through the speakers that was resolved by tightening all the screws I could reach and the right channel positive output is fussy about how the speaker lead is inserted - banana ). It seems it is the predecessor to the A21. I am thinking to upgrade. I have a tube pre-amp and a pair of Magnepan 1.7i's
From a look the A21 seems to have similar specs but a cleaner layout (not so many caps strewn about the place) From the specs, the + adds about 25% more power,20% more uF (whatever that does for you) 50% reduction in THD at full power and small increase in signal to noise ratio.
I also have an opportunity to purchase 2 A21's (not plus) for 1380 each. I could use them as mono's or use them to bi-amp my Maggies.
I don't know I could use them as monos. My HCA2200 is not rated to drive a 4ohm load in bridged mode, if I remember correctly.
What say you?
From a look the A21 seems to have similar specs but a cleaner layout (not so many caps strewn about the place) From the specs, the + adds about 25% more power,20% more uF (whatever that does for you) 50% reduction in THD at full power and small increase in signal to noise ratio.
I also have an opportunity to purchase 2 A21's (not plus) for 1380 each. I could use them as mono's or use them to bi-amp my Maggies.
I don't know I could use them as monos. My HCA2200 is not rated to drive a 4ohm load in bridged mode, if I remember correctly.
What say you?