Have questions, call +1.773.326.9920 | info@hh-americas.com. h+h americas: June 22 - 24, 2023 | #hhamericas Chicago, IL @ Donald E. Stephens Convention & Conference Center in Rosemont. If you have any questions regarding the service manual, please feel free to contact RES Customer Service at (847) 696-2208 or customerservice@rosemontexpo switch (refer to a qualified HH dealer). In this mode the output is 'bridged" across the 'hot"terminals of both channels, creating a balanced transformer-less output of 200 Watts mono into an 8 ohm load. An LED on the front panel illuminates when the amplifier is switched to mono operation. H|H Audio V800 Amplifier Information. I currently have a H|H (or HH or H&H depending on who types it) Audio V800. I know very little about this amplifier other than it sounds very nice and it is beefy. I acquired it from my father who used to use them for Pro-PA applications, he still has 8 of them sitting in a road case in his warehouse. HH amps were favoured by Van Halen (see pics). This model is from the 80's. Vintage HH V800 Mos-Fet High Performance Professional Power Amp Amplifier. Used - Good. New Price $549.67 + $105.99 Shipping. Looks like someone already grabbed this gear! Tracked service within Canada and to the USA.