{"product_id":"white-spiral-boost","title":"White Spiral Boost","description":"\u003cp\u003eThe White Spiral Boost is a dirty boost and the result of my exploration of various JFET circuits initially inspired by Jimmy Page’s use of the Barcus Berry Preamp.\u003cspan\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eWhile Page is only known to have used it on acoustic, I found that the BB 1330-1, and the simpler BB 1330S, work great with electric guitars that have low-output pickups and as a general boost circuit.\u003cspan\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eThe White Spiral circuit has evolved over time to become a hybrid circuit with bits of the BB 1330S, National Semiconductor Mu-Amp, and the Yellow Spiral.\u003cspan\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eThe White Spiral uses a dual JFET for amplification, the Grit is a combination of JFET and Silicon clipping, the Girth control comes from the Yellow Spiral but with a twist, the White also has 18v internal operation to provide increased headroom.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe location of the Girth Control in the circuit is user-definable by the Alpha\/Omega two-way toggle.\u003cspan\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eIn the Alpha (A - Left) position the Girth control is placed before the low-gain Grit clipping section of the White Spiral.\u003cspan\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eThis position allows more, or less, bass to be sent to the Grit, and changes the character and compression of the Grit.\u003cspan\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eThe Omega (Ω - Right) position places the Girth Control after the Grit Control and this position changes how much bass content is passed through the circuit.\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan\u003eThis position is still dirty but it is more open, glassy, and Hi-Fi sounding than the Alpha setting.\u003c\/span\u003e \u003c\/span\u003e\u003cspan\u003e  \u003c\/span\u003eBassists will LOVE the Omega selection!\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Grit Control does double duty, it both changes the performance of the JFET’s to create distortion, and also brings in Silicon clipping.\u003cspan\u003e \u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eThese two types of clipping together are slightly asymmetrical and the result is a natural-sounding low-gain grit\/grind that mates well with already dirty amp channels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Dual JFET Boost circuit\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Girth capacitor network\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Grit tailored to complement\/supplement amp gain\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• +18v High-Headroom Internal Operation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Warm White LED\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Hand-Brushed Natural Aluminum Top\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Laser-Glazed Graphics\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• True Bypass\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e• Designed, Hand-Soldered, and Assembled by Tom Cram\u003c\/span\u003e\u003c\/p\u003e","brand":"Spiral Electric FX","offers":[{"title":"Default Title","offer_id":50963175538943,"sku":null,"price":215.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/1023\/7183\/files\/SpiralWhite.jpg?v=1794181946","url":"https:\/\/maxvanta.shop\/products\/white-spiral-boost","provider":"Clearbrook Goods","version":"1.0","type":"link"}