Great replacement for any tube in 12a?7 family if your amp can handle increase heater current (600 mA )
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I tested the CBS 12BH7 Black Plates in a Dared 300B, first in the preamp stage where it delivered a great open sound with a lot of detail and much deeper, tighter bass than any 12au7 I’ve tried in the amp. While the initial impressions were good, the magic truly happened when I moved it to the driver stage, causing the sound stage to explode. When listening to Melody Gardot’s “Who Will Comfort Me,” it felt as if my room had been converted into a huge concert hall, an effect that was magnified even further when I swapped the Westinghouse 12ax7 for RCA 5751 tubes in the preamp. This combination was a huge success, providing a spatial experience that felt like 5.1 surround sound with only two channels.
* Low-End: Delivers much deeper and tighter bass response compared to standard 12au7 variants. * Soundstage: Provides an explosive, concert-hall-like spatial presentation when utilized in the driver stage. * Clarity: Offers a great open sound with a high level of technical detail. * Synergy: Pairs exceptionally well with RCA 5751 tubes to create a massive, immersive soundstage.
Final Verdict: The CBS 12BH7 Black Plates is a phenomenal performer that can completely transform your system’s spatial capabilities, especially when optimized within the driver stage.
I tested the CBS 12BH7 Black Plates in a Dared 300B, first in the preamp stage where it delivered a great open sound with a lot of detail and much deeper, tighter bass than any 12au7 I’ve tried in the amp. While the initial impressions were good, the magic truly happened when I moved it to the driver stage, causing the sound stage to explode. When listening to Melody Gardot’s “Who Will Comfort Me,” it felt as if my room had been converted into a huge concert hall, an effect that was magnified even further when I swapped the Westinghouse 12ax7 for RCA 5751 tubes in the preamp. This combination was a huge success, providing a spatial experience that felt like 5.1 surround sound with only two channels.
* Low-End: Delivers much deeper and tighter bass response compared to standard 12au7 variants.
* Soundstage: Provides an explosive, concert-hall-like spatial presentation when utilized in the driver stage.
* Clarity: Offers a great open sound with a high level of technical detail.
* Synergy: Pairs exceptionally well with RCA 5751 tubes to create a massive, immersive soundstage.
Final Verdict: The CBS 12BH7 Black Plates is a phenomenal performer that can completely transform your system’s spatial capabilities, especially when optimized within the driver stage.