BMU1500 review from theaudiophileman
Friday, 19th May 2017
Promising to reduce main noise and improve overall sound quality, Paul Rigby reviews the Russ Andrews Balanced Mains Unit 1500.
This product has now been replaced by the improved BMU1500 MKII - click here for details.
Like his review of the Power Purifier in our previous blog, Paul Rigby chooses a simple system with no mains conditioning in order to test the abilities of the BMU1500 in isolation. His reaction on comparing this system with and without the unit in place?
Wow, that's a pretty impressive effect!
He notes that it literally took seconds to determine the improvement. The start of the track he was listening to featured "tinkly bells and other fragile percussion" which he had never heard so clearly before. "It was nigh on incredible just how detailed these first few seconds were" he says.
The improvements were not just in the upper frequencies though, as bass improved too. He found that the lower end developed a strong presence without becoming overpowering or boomy, but becoming more natural in its presentation. Perhaps the most impressive aspect was the way the application of the BMU1500 brought out new instruments he'd never even heard before: "a strumming electric guitar, percussive additions and was that a cabasa?"
This had all been achieved by just plugging in the amp - now he added the CD player. And the effect was to lift the whole sound up another level again.
Such improvements clearly warranted a test on the reference system, so the next step was to hook the BMU supplied CD/DAC combination to his Icon Audio monoblocks. Again, this produced another significant lift in performance, suggesting that there was no limit to the level of system this unit could bring improvements to. He writes:
Unsurprisingly, having experienced the level of improvements the BMU1500 can bring, Paul's conclusion is quite emphatic:
RATING: 9/10 Deeply Groovy
Written By Simon Dalton