Is Rivera amps still in business?

About Rivera Rivera is a privately owned company. You will still be enjoying your Rivera product long after our competitors’ products are no longer serviceable and have been discarded. Only Rivera builds an all-tube stereo combo amp, the S120 series.

How do you bias an amp with a multimeter?

Set your multimeter to DCV > 200m. Insert the black and red ends into the proper test points and note the reading on your multimeter. Locate the bias trim/knob labeled V1, V2, etc, (usually located on the top near the front of the amplifier) and with your screwdriver make very slight turns and watch the readout change.

Where are Rivera amps made?

Burbank, California
Like all Rivera® amplifiers, they are built with military and audiophile grade components, and lovingly handcrafted in Burbank, California.

Who uses Rivera amps?

Artists

Aaron Lewis – Staind. Adam Jones – Tool (Used KR7 on 10,000 days album) Albert Lee. Alex Skolnick. Andy Jordan – Matchbook Romance.
Eric Gales – The Eric Gales Band. Eric J. Deitz. Eric Sardinas. Fred Tackett – Little Feat.
Olivier Rouquier. Paul Barrere – Little Feat. Paul Jackson Jr. Paul Yandell. Peter Maunu.

How often should you replace valves in an amp?

“In theory, a valve should have a working lifespan of anywhere between 1,000 and 5,000 hours for common types, and up to 8,000 or so for the more rugged industrial/mil-spec variants.

How do you measure the bias of a tube amp?

The bias of the tube amp is measured in milliamps (mA) which are a unit of measurement for electric current. Our example amplifier has four power tubes all using octal sockets, so we will need four octal probes for our measurements.

How do fixed adjustable bias amps work?

In fixed adjustable bias amps, the bias is set using a trimpot. This potentiometer works similarly to a volume pot on a guitar but it controls the level of a negative voltage inside the amp rather than the volume or tone of the signal. Instead of adjusting the pot with a knob, the pot usually has a slot for a screwdriver.

How do you Biase a reverb tube to 70%?

When biasing to 70% or whatever percent you’re looking for you simply multiply the answer by that number divided by 100. We’ll call this variable x. Let’s say we have a Deluxe Reverb that needs to be biased. We know the 6V6GT tubes have a power rating of 14 Watts ( P = 14 W ).

How do I access the bias Trimpot on my amplifier?

To access the bias trimpot, the amplifier usually needs to be disassembled. This can require removing the chassis from the cabinet or if you are lucky you can simply remove a back panel on the amp. Check the manual and inspect the amplifier before removing any hardware to determine the correct way to access your amplifier trimpot.