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DBX 786
PRECISION MIC PRE
DBX 786 at the lowest prices! Power Alley is an authorized dealer for
the DBX 786! Free shipping on the DBX 786. Call 800-788-9552 for
the best deal on the DBX 786!


130dB of Dynamic Range
High-Drive output transformer circuit drives 1000 ft. of
Belden® cable at +30dBu with only .007% THD
+48V Phantom Power, Phase Reverse, -20dB Input Pad
Super Low-Z input switch for low impedance microphones or
altering the microphone's sonic character
Proprietary High Frequency EQ circuit with cut/boost to 40kHz
The craftsmanship of the 786 is as stunning as the engineering
is innovative. A striking blue front panel machined from 1/4" aircraft aluminum,
hand-crafted solid aluminum knobs, LEDs mounted individually in machined
stainless steel housings, custom VU meters with peak indicators, and heavy gauge
chassis solidify the 786 as the benchmark preamplifier for decades to come. The
786 combines the best preamplifier features and an absolutely pristine audio
path. In addition to having +48V phantom power as well as a phase reverse
switch, the 786 also features a patent-pending EQ circuit called "spectrum" with
frequency cut and boost up to 40kHz. An 11-position coarse gain switch sets the
gain between +10 and +60 dB, while the fine gain control varies between -3 and
+3 dB. Levels may be monitored on peak-program VU meters with adjustable
reference levels. The signal path consists of a transformer-coupled,
discrete-design premium input stage utilizing the proprietary dbx M8 Mic Pre-Amp
Module.
"Spectrum", a unique variable high-frequency equalization circuit employed in
the mic pre-amp enhances the high frequency spectral content of the signal while
maintaining phase integrity. The "Detail" control varies the amount of high
frequency shelving boost at the frequency determined by the Spectrum control.
The combination of the Spectrum and Detail controls allow pristine high
frequency equalization adjustments without the added "hash" of traditional
high-frequency EQ topologies. Premium active electronics, precision 0.1% and 1%
metal film resistors, great sounding temperature stable polypropylene
capacitors, high-reliability board-to-board connectors with
gold-palladium-nickel contacts, Jensen® transformers, gold plated Neutrik® XLRs,
rare earth magnet relays with gold contacts in a hermetically sealed nitrogen
environment, military grade glass epoxy circuit boards, to mention a few,
contribute to the most technologically advanced preamplifier in the world.
786 Features/Specifications
The dbx Blue Series Solid State Mic Pre-Amp is a 2U two-channel precision mic
pre companion product to the 160S Stereo Compressor/Limiter. We refer to this as
a "precision mic pre-amp" as it is designed to provide the truest reproduction
of the microphone source as is electronically possible, as opposed to "FX" mic
pre-amps. The pre-amp features the ubiquitous +48V phantom power, 20 dB pad, and
phase invert functions, but also includes a switchable "super low Z" setting
which optimizes the pre-amp performance for microphones with very low source
impedance. An 11-position coarse gain switch sets the gain between +10 and +60
dB, while the fine gain control varies between -3 and +3 dB. Levels may be
monitored on peak-program VU meters with adjustable reference levels.
The signal path consists of a transformer-coupled, discrete-design premium input
stage utilizing the proprietary dbx M8' Mic Pre-Amp Module. The minimum signal
path design routes the amplified signal directly to a patented high output drive
circuit. Each stage throughout the mic pre-amp is small-signal square wave
compensated to assure precise phase alignment at all audio frequencies.
Two output options will be available for the mic pre; an analog card that
parallels one extra high drive output per channel acting as a premium signal
splitter, and a dbx Type IV Conversion System' card that provides proprietary
analog-to-digital conversion for both channels with both AES/EBU and S/PDIF
outputs.
The dbx Blue Series Solid State Mic Pre has patented high-precision, high-drive,
transformer-coupled output stages capable of performing with incredible accuracy
and sonic transparency in virtually any audio environment. The custom designed
transformer, coupled with a discrete distortion canceling driver circuit, is
capable of driving 1000 feet of Belden 8451 cable terminated with a 150 ohm
load, while maximum drive levels exceed +30 dBm. Yet this output stage exhibits
remarkably low distortion levels, immeasurable using standard audio test
equipment.