My Band will not play through generators period. It's in our contract if we sign one, but I always make that clear up front.
Here is a link to what I've been using.
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KEY BUYING POINTS
Tripp Lite's ISOBAR is the world's number one selling premium suppressor series with more than 14 million satisfied customers and a safety-tested history of 20+ years
Robust surge suppression with sine-wave tracking protects against the heaviest of surge conditions, exceeding IEEE category A&B specifications and reducing 6,000V test surges to harmless levels less than 35 volts
Multi-component suppression circuits combine torroidal chokes, ferrite rod-core inductors, HF/VHF capacitors and multiple layers of metal oxide varistors into exclusive isolated filter banks that remove EMI/RFI interference, even noise from other pieces of connected equipment
4 outlets arranged in two filter banks prevent system crashes, reboots and performance problems common as noisy peripherals are powered off and on
Network grade surge suppression rated at 2200 joules / 85,000 amps
Widely spaced outlets accommodate up to 2 large transformer plugs without blocking outlets
3 LED indicators confirm suppressor operation and site wiring status, plus warning of suppressor or electrical fault conditions
Lighted power switch confirms power on/off status
6 foot AC line cord with space-saving angled input plug
Keyhole mounting tabs allow permanent installation
Set of 4 outlet covers safely seal off unused outlets
120V AC, 50/60Hz electrical compatibility
$50,000 Ultimate Lifetime Insurance (USA & Canada Only)
Lifetime product warranty
UL1449 listed - surge suppression (330V let-through), UL1283 listed - EMI protection, UL1363 listed - power tap, cUL approved to Canadian standards