Have the Stack eq under my tube amplifier and under my power conditioner. What a difference. More depth, more natural sounds, more open and more peace. Then I removed the set under the power conditioner and put it under my turntable. This was a real improvement. My records sound much better than my cds on my Teac cd player. Now saving for Stacks under my speakers.
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Stack Audio is a UK-based manufacturer of high-end audio components.
