Oldsansui441
Super Member
Hi, l have recently acquired the above amplifier and after checking and regreasing the outputs, checking drivers, replacing the power globe, replacing the power switch, replacing a mylar cap causing low filter issues in RH channel and setting bias and offset l am listening to it right now.
I must say this amplifier sounds VERY good (has that airy, detailed and full bodied sound that l like). It was built without any obvious cost cutting, ie it has full board shielding, point to point switches, full aluminium knobs even the little toggle tips have no inserts (very unusual), 2 phono and 2 aux inputs, pre in/main out capability and complementary dc coupled amplifier. The amp board is plug-in so makes working on it a breeze.
I have had about 60 vintage amps/receivers from most of the main players and this one stacks up very well indeed, certainly sounds in the top 30-40% of all of these l would estimate. It is rated at 55wpc into 8 ohms and 75 into 4 ohms although the 4 ohm rating may be a little optimistic.
Someone had previously recapped this amp before l purchased it with Panasonic FC's and they have done very clean work.
Anyway just thought l would share my experience with this amplifier as Monarch seems to be a lesser known brand and there is very little information out there, l couldn't find a service manual or schematic. For those interested l set the bias to 30mA, so 14-15mV across one emitter resistor.
So if anyone sees one l would recommend grabbing it if the price is right .
I must say this amplifier sounds VERY good (has that airy, detailed and full bodied sound that l like). It was built without any obvious cost cutting, ie it has full board shielding, point to point switches, full aluminium knobs even the little toggle tips have no inserts (very unusual), 2 phono and 2 aux inputs, pre in/main out capability and complementary dc coupled amplifier. The amp board is plug-in so makes working on it a breeze.
I have had about 60 vintage amps/receivers from most of the main players and this one stacks up very well indeed, certainly sounds in the top 30-40% of all of these l would estimate. It is rated at 55wpc into 8 ohms and 75 into 4 ohms although the 4 ohm rating may be a little optimistic.
Someone had previously recapped this amp before l purchased it with Panasonic FC's and they have done very clean work.
Anyway just thought l would share my experience with this amplifier as Monarch seems to be a lesser known brand and there is very little information out there, l couldn't find a service manual or schematic. For those interested l set the bias to 30mA, so 14-15mV across one emitter resistor.
So if anyone sees one l would recommend grabbing it if the price is right .
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