$2376 (2 channels)
$3936 (4 channels)
$5496 (6 channels)
$7336 (8 channels)
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NOTE: Specifications on all Busby Electronics products are subject to change without notice. Such changes will usually be made as improvements to design.
2/8Rack Tube Preamplifier
August 2011 Audio Sample
I/O on XLR and TRS connectors. Front Panel 1/4" Instrument Input.
13.8 Mb, WAV, 24bit 48KHz
"Noodling" by Arthur: Chinese Fender Tele through direct box/splitter, padded -20db.
DI into mic input, Channel 2 (right side of mix) No pre-xfmr pad, no negative feedback, no post-xfmr pad, polarity reversed (to match with instrument input channel), no hpf, volume 40%, Output 20%.
DI Bypass into instrument input, Channel 1 (left side of mix). Instrument input bypasses all pads, polarity, nfb, and hpf. Signal output is reverse polarity as first stage is bypassed. Volume 100%, output 40%.
Outputs from preamp fed through Peavey VC/L-2 Compressor on limiter setting, gentle -3db max gain reduction. Output fed into line inputs of MOTU Ultralite running on MacBook. Recorded in Logic Pro 9 with reverb added.
No other effects or processing. Mixed to 24bit 48KHz Stereo file.
63Mb, WAV, 24bit, 48KHz
"Ribbon of D Tune" by Arthur: Martin Composite body acoustic guitar, 4 feet from CAD Trion 7000 mic in to one channel of the 2Rack. HPF engaged, otherwise no equalization. Impedance set for ribbon mic, feedback off, no pads engaged. Tracked directly to Cubase through a Focusrite Saffire Pro 40 interface, added reverb and a slight amount of compression during the mix.
A 1961 Harmony solid body lap steel guitar is played though the 2Rack using the instrument input. This track had the high end rolled off in Cubase. There are two tracks of simple djembe drum added using the CAD Trion Ribbon mic through the 2Rack - I apologize for the timing, this started as a noodle while testing the preamp. I love the tone on the acoustic guitar, have a new respect for the CAD mic, which didn't sound anywhere near as nice plugged into the mic preamp in the Focusrite.
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