Used Weber Mass 200 Attenuator

We have for you this fantastic Weber Mass 200 Attenuator! With a simple 2 knob setup you have total tonal control and can easily dial in your favorite tones. One knob is for the Volume and the other knob is for Treble Compensation. This is perfect for maintaining a balanced tone at higher attenuation and lower volumes. You have options for output such as Line Out and Headphone Out. This unit also has the ability to be controlled by a footswitch. This is a versatile attenuator that can handle 4,8, and 16-ohm. This is a passive attenuator and only needs power for the footswitch. This attenuator is in good condition.

200 watt MASS with a moving voice coil speaker motor for the load. This unit is impedance swamped to protect the output of your tube amp, and may be used with 4, 8, and 16 ohm amps. Includes adjustable Line Out, System Bypass, and Variable Treble Compensation. Volume level is continuously variable to over 50db of attenuation.

Like all Weber attenuators, setting the speaker control to minimum (maximum attenuation), allows the MASS 200 to be used as a dummy load for testing or for DI use.

There is an option to add a headphone output, and this adds an extra jack with an independent volume control. For the footswitch option, we install a relay which requires 7.5V external power. This only powers the relay – the attenuator itself is still passive. We include the power plug but the footswitch itself is not included. You can use any latching footswitch, including one incorporated in a multi-effect floor unit.

This item is hand-built to order, to ensure the best attention to detail is paid to its construction. We build them one at a time, on a table – not hundreds at a time on an assembly line. This allows us to reduce the margin for error and produce an overall higher-quality product. Please allow at least 7-10 business days for your order to be built and then shipped.

IMPORTANT NOTE ABOUT HIGH GAIN AMPS*: *if you have a Fender or similar amp, and play with cleaner tones, this part does not apply to you. High gain amps such as Marshall or clones (with heavy distortion) are hard on attenuators. Unfortunately, an amp’s volume dial is not a good indicator of how much power is being produced. Many amps can reach full power at 3 or 4 on the volume dial, so it is a good suggestion to get an attenuator with 4x the power handling. For example, if you have a 50w high gain amp, you should opt for the MASS 200. If you have a 100w amp, you should still go with the MASS 200 but you should not crank the amp.

1) do not attenuate too far down. this puts a lot of power through a very small section of the volume rheostat which can cause it to fail

2) also do not turn your amp all the way up. even if you’re just knocking a little off the top with the attenuator, it’s a good idea to keep the amp somewhere in the middle at most. it’s best to find the lowest volume on the amp that is the acceptable tone to you, and then use the attenuator to bring it the rest of the way.

CABLES: for combo amps, most people like to set the unit on top of the amp. sometimes there is enough slack in the speaker wire to reach and sometimes there isn’t. these cables will make it work for you: GMC2P and GMC2E If the speaker is hardwired, then you need the PV30MH. (click the links to view them, and add to your order if you need them.)