This was purchased for driving various speakers at an in-the-round theatre. It is a bit heavy, but who cares when installed in a rack? Probably a traditional (therefore more reliable?) power supply rather than a switched mode type. Sound is good, with little background noise (no hum and very low inherent noise level), there is great flexibility with bridge switching and common inputs if required and for the money, I feel I'd have been very hard pushed to beat this excellent bit of kit. Well done Thomann, who also got it to me VERY quickly, despite it being described as being "on a 2-5 days delay" for delivery on the website.
I bought this amp for an unusual and specific purpose - for a church organ. The instrument dates back to the 60s and the 4 internal amps had died one by one over the past few years. Spare transistors are no longer readily available so I took the decision to replace them all with one single 4-Channel amplifier - the E4-130. Worked perfectly as soon as it was installed, and the organist said the organ had never sounded so good or as powerful.
Very pleased. It's fairly weighty (I think it's a traditional liner power supply rather than switch-mode), but for this application that was no problem.
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