Sushi Box FX JC Emerald v2 on Bass
The Sushi Box FX JC Emerald is another great offering from Sushi Box FX this time based on the ever popular rock amp the Marshall JCM800. This version takes the standard JCM800 and adds a couple of tonal options making it more versatile and user friendly for bass players. My impressions for bass start with the Deep switch engaged. My test bass has a Seymo0ur Duncan Vintage P into the JC Emerald into my Zoom interface monitored through Mackie CRx3 and Koss headphones. Tonal comparison was my first run Underground Accelerator for a baseline. As always YMMV
The gain is very sensitive and quickly goes from clean into saturation and as much overdrive as you can stand, low doses of that are a potent ingredient in a rock player’s arsenal, the gain is also nicely touch sensitive adding authoritative crunch when pushed by plucking deeper. Mid gain crunch into full on overdrive the JCE has very pleasant teeth with no loss of lows and mids that should punch well. Of course higher gain settings do introduce some noise. I might have wished for a little more clean headroom in the beginning. With the Deep engaged the bass is potent and punchy, mids are pronounced and highs are very open in comparison to the UA but not overly so unless the Brite is engaged. There is a lot of output with this pedal so be careful not to overdrive the rest of your signal chain. Compared to the UA the JCEmerald has all the bottom and mids with more open highs, switching back and forth the highs seem dampened on the UA which normally has a very pleasant character for bass. As hoped the Deep adds some of the authority of the venerable Marshall Major 200 watt beast and other Bass versions I have experienced.
If you're looking for a rock bass voice to emulate Lemmy, Chris Squire, Jack Bruce or Noel Redding the JC Emerald has the goods. If looking for a different tone option this also has a different character with the open highs, but be careful with the gain as saturation happens pretty early.
TLDR; Compared to the UA the JCEmerald has all the bottom and mids with more open highs, switching back and forth the highs seem dampened on the UA which normally has a very pleasant character for bass. If you’re looking to Rock the JC Emerald delivers.
Cons; I wished for a little more clean headroom before saturation, IMHO this would make it a lot more versatile and an alternate voice for other styles than rock.
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