Ampeg V-4B with no load

[Ryon]

Hello, I’ve been running my Ampeg reissue V-4B with no cab, running DI into my interface.

Someone notified me that running a tube amp with no load will damage the preamp. Is that the case with this amp as well?? Will I cause damage running DI into my interface with no load or cab attached?

 

[Jim C]

DO NOT DO THIS.
Top of page 7: https://ampeg.com/data/6/0a020a41e58d5e0b91edd46ce/application/pdf/Owner’s Manual - English .pdf

It's the power amp section that will be damaged.
I used to use the original V4B with a huge (300 watt so I could use it for an SVT too) 4 Ohm ballast resistor on the speaker output so that I could go direct into the console with the pre-amp out.

A believe a proper impedance ballast resistor of greater than 100 watts is safe. Adjust your impedance accordingly.

 

[rickdog]

We're talking expensive damage. If you haven't hurt it yet, consider yourself lucky.

 

[rodl2005]

Read the manual! With all amps

 

[Ryon]

We're talking expensive damage. If you haven't hurt it yet, consider yourself lucky.

Wow thank you so much. I went and picked up my PF-1x15 from my studio. I guess I’ll start reading manuals.