| BENEFITS |
Dramatically improves microphone performance |
Greater dynamic range and frequency response |
Dramatically improves instrument performance |
Fuller, more realistic sound |
Improved Detail and Intelligibility |
Record hotter tracks with the highest possible resolution |
Tighter lows; clearer up-front mids; Strong highs without edginess
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MicLim offers up to a 20dB increase in dynamic range and
makes the Model 207 virtually crashproof |
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| FEATURES |
Two independent low noise channels of tube amplification |
Microphone and Instrument inputs on each channel |
MicLim on each channel |
Mic Input: 20 to 65dB of continuously
variable gain |
Instrument Input: -infinity to 65dB
of continuously variable gain |
Switchable 48 volt Phantom Power
with ramp up feature |
Delayed Turn On |
Polarity, 20 dB pad and Low Cut
Filter switches |
LED Headroom Meter Display for each
channel |
Switchable -10 dBv / +4 dBu operating level |
Balanced 3-pin and 1/4" TRS Inputs and Outputs |
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Internal Switch Mode Power Supply
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| PROPRIETARY
CIRCUITRY |
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MicLim provides up to 20 dB of gain reduction.
It is a custom designed optical attenuator, located directly
on the mic input line that smoothly limits the microphone's
output signal according to the MicLim peak detector's control
current. Since attenuation
comes prior to preamplification, the patented MicLim can increase
the Model 207's effective headroom by up to 20 dB. MicLim
detects the preamp's output signal and instructs the input
attenuator to proportionately reduce the microphone's output
level just enough to prevent clipping. MicLim has no effect
at all when the preamp's output level is not approaching clipping.
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Reflected Plate Amplifier The patented RPA is
a true vacuum tube circuit which has all the desired characteristics
without the heat, fragility, sonic variability, short life
and high frequency roll-off of conventional tube designs.
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OTHER INNOVATIVE FEATURES
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Delayed Turn-On - The power
LED glows orange while the Tube circuit is stabilized and
all DC is eliminated (ensuring no turn on thump which can
seriously harm loudspeakers). When the LED turns green the
Model 207 is ready for optimum performance.
|
Switch Mode Power Supply - this internal power supply
will automatically adjust to any line voltage making the 207
an excellent choice for touring applications: no switches
to throw, no jumpers to remember to set, etc.
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| For Recording
Microphones and Instruments |
|
The Model 207
will capture the subtleties of voices and instruments that
are missed by the inexpensive mic preamps fpund in most audio
consoles, DAW's and other standalone preamps. This detail,
dimension and space will greatly improve the overall "sound"
of your recordings. With this improvement in realism comes
an enhanced presence allowing for easier placement in the
final mix. For recording instruments a typical mono tube direct
box (DI) sells for about the price of a model 207 and
we'll give you two great DI's plus two great mmic preamps,
more useful features and Aphex quality all in one box! MicLim
allows you to utilize every last bit of digital resolution
for the most dynamic recordings possible.
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| For Live
Sound, Touring PA, and Fixed Installations |
|
The 207 can bring
anything miked up out of the mix by greatly improving detail
and presence. Vocals and instruments will have a noticeable
improvement in clarity and depth when switched to a Model
207. The Switch Mode power supply offers stable performance
even with unstable mains voltages. MicLim eliminates those
desperate lunges over the mixing desk to trim back overloaded
preamps.
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| For Broadcasting
and Webcasting |
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Typical Broadcasting
and Webcasting chains reduce the clarity and detail of an
audio signal. Thie is especially damaging to voice presence
and intelligibility. Voices miked through the 207 will better
retain their original character and impact. MicLim ensures
a strong undistorted sound that will still sound good out
of a computer speaker, car radio, or high fidelity system.
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| As a "Direct
Box" |
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For bass, acoustic
guitar and keyboards the Model 207's low-noise, wide frequency
response and tube warmth allow each instrument's unique character
to be captured. The MicLim circuit works on the instrument
input also, protecting against overload distortion.
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| SPECIFICATIONS
- Aphex Model 207 - Tube Microphone and Instrument Preamp |
| AUDIO |
|
|
| |
Frequency
Response |
+0, -0.5dB
30Hz - 30 kHz |
| |
EIN |
-129dBu
(input shorted) |
| |
Crosstalk
(10 Hz - 22kHz) |
-79 dB
or better |
| |
THD (10
Hz-22kHz at -11dBfs) |
< 0.18% |
| |
Tube
Type |
12AT7
/ ECC81 Dual Triode |
| MIC
INPUT |
IF
OPERATING LEVEL SET TO +4 dBu |
IF
SET TO -10dBv (-7.8dBu) |
| |
Connector |
XLR-3F |
same |
| |
Type |
Transformerless,
NPN active balanced |
same |
| |
Balanced |
2k ohms
nominal |
same |
| |
Maximum
Level |
0 dBu |
+12.5
dBV (+14.8 dBu) |
| |
CMRR |
Greater
than 70dB @ 60 Hz |
same |
| |
Nominal
Preamp Gain |
20 to
65dB minus OUTPUT TRIM loss |
8 to 53
dB minus OUTPUT TRIM loss |
| INSTRUMENT
INPUT |
|
|
| |
Connector |
1/4"
Phone Jacks |
same |
| |
Type |
Unalanced
JFET amp |
same |
| |
Input
Z |
1M ohm
nominal |
same |
| |
Maximum
Level |
10V RMS |
same |
| |
Nominal
Preamp Gain |
infinity
to 65dB minus OUTPUT TRIM loss |
infinity
to 38dB minus OUTPUT TRIM loss |
| OUTPUT |
|
|
| |
Connector |
XLR-3M
and 1/4" TRS Phone Jacks |
|
| |
Type |
Impedance
balanced
(may be used unbalanced) |
| |
Output
Z Balanced |
XLR: 66
ohms - TRS: 1200 ohms |
|
| |
Output
Z Unbalanced |
XLR: 33
ohms - TRS: 600 ohms |
|
| |
Nominal
Level |
+4 dBu |
-10dBv
(316 mVRMS) |
| |
Maximum
Level |
+21dBu
Unloaded |
+6.75
dBV Unloaded |
| |
Output
Trim |
0 to -12
dB |
same |
| INSERT |
|
|
| |
Connector |
1/4"
TRS Phone Jack |
|
| |
Send |
Tip |
|
| |
Return |
Ring |
|
| |
Nominal
Operating Level |
-10dBv
(316 mVRMS) |
|
| |
Point
of Insertion |
Between
front-end and Tube Output Stage |
| OTHER
SPECIFICATIONS |
| |
Power
requirements |
90-250
VAC 50-60 Hz 12W |
|
| |
Dimensions |
19"W
x 1.75"H x 8.25" D 1 Rack
U (482.6mm
x 44.5mm x 209.6mm) |
| |
Depth
behind front panel |
7.5"
(190.5 mm) |
| |
Net Weight |
6 lbs
(2.73
kg) |
|
| |
Shipping
Weight |
9 lbs
(4.1
kg) |
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