Digital Optical Coax to Analog Stereo Audio L/R Converter Adapter with Optical Cable RCA Cable

Combining two RCA audio signals

Which tube sounds the best?! We were really surprised by the RCA 5751, but ultimately we think the RCA black plate takes the cake. Although some of these results may seem subtle, in person they are even more apparent. Yet, we think the differences are pretty clear even being recorded with little effort. Tubes Tasted (from left to right): 1. Russian 12AX7WA 2. GE 12AX7WA 3. RCA 12AX7 Black Plate 4. RCA 5751 Black Plate 5. GE 12AY7 - no break up, perfect for pedal platforming! Signal Chain: Valco

RCA Voyager III review: Even at $50, this tablet can't hold a candle to Amazon's Fire

RCA Electronics