BURL Audio B2 Bomber 2-Channel AD Converter

Please note: Ethernet port provides Dante connectivity to units with Dante “Brooklyn II” card installed (not included).

Trusted by top mixing and mastering engineers, the BURL Audio B2 Bomber AD Converter is a two-channel analog-to-digital converter with an all-analog signal path that recreates the warmth and feel of analog tape. A custom BURL BX1 transformer input feeds an all-Class-A, discrete transistor circuit with zero feedback and zero capacitors, breathing new life into your analog mix bus or mastering chain. Learn more about the BURL B2 Bomber ADC, and you'll see why it's a top choice for engineers who want more character from their digital recordings.

CLASS A DESIGN

The BURL B2 Bomber ADC features Class A circuit design inspired by vintage studio consoles and microphone preamps. This design preserves the character of the tubes, transformers, and boutique gear in your chain. The result is a studio-quality converter that maximizes the depth, punch, and natural warmth in your recordings before a single sample is captured. Plus, the attenuator settings let you adjust the headroom for cleaner, clearer recordings, or hit the front end hotter for a more saturated sound.

DISCRETE TRANSISTORS

Many converters use inexpensive integrated op-amps in their analog stages, even when the conversion chip itself is top quality. The BURL B2 Bomber ADC uses discrete transistors instead, selected by BURL Audio founder Rich Williams through extensive listening sessions. This not only removes the blurriness and graininess of digital recordings, but also adds depth and dynamics.

ZERO-CAPACITOR SIGNAL PATH

Many converter front-ends pass audio through coupling capacitors that subtly color the signal, but the BURL Audio B2 Bomber ADC uses a direct-coupled, zero-capacitor signal path where nothing sits between the BX1 transformer and the converter chip except discrete transistors. The B2 Bomber ADC's capacitor-free audio path allows the analog tape-like sound of the BX1 to shine while delivering tight, focused low-end that keeps your recordings from sounding muddy.

HIGH-DEFINITION METERING

Accurate level monitoring matters when input level shapes the sound, so the B2 Bomber ADC features 30-segment meters that display RMS and peak levels simultaneously, plus a peak LED you can clear with a dedicated reset switch. The meter works alongside the six-position attenuator, which sets the converter's input headroom from -12 dBFS to -22 dBFS relative to +4 dBu.

COMPREHENSIVE DIGITAL CONNECTIVITY

The BURL B2 Bomber ADC offers two AES digital outputs, a coaxial SPDIF out, and a Toslink optical output for connecting the ADC to a variety of modern and legacy equipment. Six sample rates from 44.1 kHz to 192 kHz are available on the internal clock, and an AES dual-wire mode (available at 176.4 kHz and 192 kHz settings) sends the left channel to one output and the right channel to the other. A BNC word clock input lets you sync to an external clock, and two BNC word clock outputs share the B2 Bomber ADC’s low-jitter clock with other digital gear in your studio.

ABOUT BURL AUDIO

Founded in 2006 and based in Santa Cruz, California, BURL Audio designs and builds all of its professional audio gear in the USA under the direction of owner and designer Rich Williams. Before launching BURL, Williams designed the Universal Audio 2192 converter, and he created the B2 Bomber ADC by adding a custom transformer input to a Class A conversion design. The company grew out of Paradise Recording, a commercial studio where engineers design and test every product in real sessions. The B2 Bomber became the foundation for the brand's multichannel converters, and BURL Audio gear is now used to record, mix, and master music in studios around the world.

BURL AUDIO B2 BOMBER AD CONVERTER FEATURES:

• Two-channel analog-to-digital converter with discrete Class A analog signal path
• 24-bit resolution with six selectable sample rates: 44.1, 48, 88.2, 96, 176.4, and 192 kHz
• Proprietary, high-definition BURL Audio BX1 transformer input
• All Class A, discrete transistor signal path with zero feedback and zero capacitors
• Audiophile-quality six-position attenuator with headroom settings from -12 dBFS to -22 dBFS
• 30-segment RMS and peak metering
• Two AES outputs (dual-wire at 176.4 kHz and 192 kHz), plus SPDIF and Toslink out
• BNC word clock input with two low-jitter outs
• Frequency response (48 kHz): ±0.1 dB from 12 Hz–22 kHz
• Frequency response (96 kHz): ±0.1 dB from 15 Hz–46 kHz
• Frequency response (192 kHz): ±0.1 dB from 18 Hz–94 kHz
• Dynamic range: 120 dB (A-weighted), 117 dB (unweighted)
• THD+N of -100 dB (+4 dBu = -18 dBFS)
• THD+N of -94 dB (+21 dBu = -1 dBFS)
• Constructed as a standard 1U rack-mountable unit
• Rugged, made in USA design