At practice last night, other guitarist fires up his Dual Recto and it is making strange noises. It sounds sort of like tube failure, but not really.
It's hard to describe. When the amp is flipped off of standby, it takes like 5-10 seconds before the sound starts happening and it happens over both channels. We swapped guitars, took everything out of the chain in front of the amp, problem remains. I lightly did the old tap test on the tubes but found no power tubes that were giving any signs.
Pretty sure these tubes are a high gain set of JJ's from Dougs Tubes that are about 4 or 5 years old now. So it's probably time for a change anyway, but the sound that comes through is unlike the tube noise I've heard before.
Its like a fizzy/crackling that is constant. When I heard tubes going bad in the past, it sort of sounded crackly but the sound would sort of come and go if you tap the tube/top of the amp....and you could hear the slight loss of power. With what we experienced last night, I'm left scratching my head.
It's hard to describe. When the amp is flipped off of standby, it takes like 5-10 seconds before the sound starts happening and it happens over both channels. We swapped guitars, took everything out of the chain in front of the amp, problem remains. I lightly did the old tap test on the tubes but found no power tubes that were giving any signs.
Pretty sure these tubes are a high gain set of JJ's from Dougs Tubes that are about 4 or 5 years old now. So it's probably time for a change anyway, but the sound that comes through is unlike the tube noise I've heard before.
Its like a fizzy/crackling that is constant. When I heard tubes going bad in the past, it sort of sounded crackly but the sound would sort of come and go if you tap the tube/top of the amp....and you could hear the slight loss of power. With what we experienced last night, I'm left scratching my head.