Review on 🎶 FX AUDIO GE5654 Stereo Tube Preamplifier for Home Audio with Bass and Treble Control, OP Amp Chip and NE5532 Replaceable Tube, Mini HiFi Vacuum Tube Buffer Preamp with RCA Input/Output (Includes Power Supply) by Stacey Haynes

This is just what I needed to upgrade my sound system running from my home computer and cable box as I also use my 27 inch TV monitor. A note to keep in mind: MUST USE HIGH QUALITY SHIELDED RCA CABLES! This reduces background hum to almost nothing. Using cheap cables will cause hum problems! The upgrade costs about $11. bought on this auction site that everyone knows. The increase in mids and bass was noticeable and worth the upgrade price. It takes about 15 minutes to swap chips in sockets on a circuit board. You need T2. Torx 5 screwdriver for front screws and M2 hex screwdriver for rear screws.