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Burl Audio B1 500-Series Preamp, from Burl

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Burl Audio B1 500-Series Preamp
Burl Audio B1 500-Series Preamp

The nickel output transformer on the B1 adds the punch and warmth your music needs!

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With the Burl Preamps (the B1 and B1D), it is really hard to talk about one without talking about both of them.  We aren't the first to approach it this way, but it is best.  Burl set out to make the highest quality 500 series preamp that they could.  With knobs that don't feel cheap, a visual cue for preamp level (the light that changes color as you push) and their own custom transformers; you are getting one hell of a product that isn't the most expensive on the market.

The B1 is the more versatile of the two.  It is more forward, tighter and more detailed than its sibling the B1D.  The B1 is our go-to when you want a preamp that can work just about anywhere, but isn't going to get overly heavy handed as you stack tracks.   For us, this is the sweet spot since most customers are building up 500 series modules over time.  The B1 is a great "first high end" preamp as you can do so much with it.  It isn't a clone of anything in particular, just a fantastic sounding, slightly colored transformer preamp.

The B1D is a bit more heavy-handed.  The output transformer in the "D" model gives it more of the vintage tone, more warmth, more color, but less detail.  This is great for being a secondary preamp that use on things like Vocals, lead guitar and overheads where you are trying to push into the color of the preamp to shape the sound.  The B1D does work on about everything you can throw at it, just keep in mind that it is more heavy handed.  

For us, these are a great one-two punch in that you get loads of versatility with the B1, and then a more heavy-handed approach with the B1D.  


B1 Mic Pres


Step Back – Here come the B1and B1D…

Introducing the B1 and B1D Microphone Pre Amps from Burl Audio. Based on the API 500 series form factor, the B1 was designed to compliment the B2 Bomber ADC, and give you multi-channel pleasure. With the proprietary BX3 input transformer and BX2 output transformer, the B1 Mic Pre delivers warmth with depth and clarity. 

The B1D is the same as the B1 except that it has an all iron BX4 output transformer giving it a more terrifying rock tone. An all discrete transistor, class-A, direct coupled, capacitor free circuit path, gives the B1 amazing punch on drums, beautiful tonality on guitars, and warmth with presence on vocals.

The B1 and B1D come complete with both Gain and Level controls. If you want that heavy, gainy tone, crank up the stepped gain control and offset that with the level control. If clean tone is your thing, turn the gain down and crank up the level. For ribbon mics and other low impedance sources, the B1 has a transformer coupled impedance select. The B1 was rigorously tested with the popular Royer R-121 in the low impedance setting, and we think it sounds pretty f***ing bitchin’’ on guitar amps. 

The B1 gets the best out of any microphone, whether it be dynamic, condenser or ribbon.Use the B1’s 1/4” instrument/line input on the front panel, plug in, crank up the gain and go. The PAD switch allows for hot signals and balanced line inputs through the mic XLR on the back panel. Run your tracks or mixes through the B1 for warmth and glue.

"experience the difference"


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Retail:  $899.00



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