Brand new - Closed Box

We are Grace Design distributors, among 100 other excellent brands.

Note: For specific shipping rates outside Europe please message us before buying. Note: We sell without taxes anywhere outside Europe and to valid VAT ID companies inside Europe. Please ask us your price without Tax in those cases.

Note 3: This product is sent factory direct. Please allow 10 to 15 days for shipping.

"It has everything you need, nothing that you don’t and is executed to near perfection" - Jon Thorton, Resolution

“Instead of searching for that ever elusive box that’s going to magically make your sh**ty mics sound like rainbows, consider investing in an m103, which will afford you the ability to capture the true color of the source and the dynamic detail of the performance.” - Scott McChane, TapeOp Magazine

The m103 starts with the tried and true m101 microphone preamplifier circuity. For many engineers, the m101 is an introduction to what quality mic preamplification is all about, and the perfect starting point for a channel strip – musical, transparent and pure. Headroom, detail, clarity – its all there. Complete with our exclusive ribbon mic mode, a 75Hz HPF and 48V phantom.

The 3 band EQ section is built around single stage parallel tuning architecture, which minimizes circuitry and delivers natural tonal shaping from 20Hz to 20kHz. Controls include a fully parametric mid, with sweepable high and low bands which can be operated in shelving or peak modes. Because of its accuracy of this design, smaller increments of cut or boost can be heard, providing a greater level of control over tone shaping.

The compressor circuit is based on an optical attenuator - the purest, high fidelity gain control mechanism available. It provides gentle limiting to fairly heavy compression, while remaining neutral and transparent. The perfect way to zip it all up and send it downstream - clean, intact and alive.

10 segment gain reduction and output meters make monitoring compression and output levels simple. The front panel accessed HI-Z input makes this an amazingly high quality instrument preamp. Comprehensive I/O options allow the mic pre and EQ/COMP sections to be accessed independently of each other, and the order of the EQ/COMP is switchable.

A dual function link/ sidechain input on rearpanel is provided for inserting external sidechain signals (for de-essing, ducking) or connecting two m103's together for stereo compression applications. Predictably, the m103 is built to last, and proudly backed by our 5 year transferable warranty. So there it is, we’ve done it. The m103 - a channel strip by name, a powerful tool by design.

Fast and musical transimpedance microphone preamplifier architecture

Updated audio path with 0.5% precision metal film resistors

New 12 position gold plated rotary gain switch

High performance output line driver amplifier and HPF amplifier

Ribbon mic mode (also great for dynamic mics) -Relay bypass of phantom power decoupling capacitors, increased input impedance, and 48V lockout

3-band presicion EQ, fully parametric mid band, peak and shelf mode for hi and low bands

newly designed optical compressor

Mic amp direct output

EQ/COMP section line input

Bombproof laser-etched black anodized frontpanel

Sealed gold contact relay for Hi-Z input switching

Built in power supply

Led indicators for +48V, Ribbon mode, and HPF

powerful 10 segment meters for gain reduction and output level

Five year transferable warranty on parts and labor

Made in the USA

GAIN RANGE (5dB steps)
Mic input
10-65dB
Hi-Z input
-10-45dB
THD+N 1kHz, 22Hz-22kHz BW @ 20dB Gain +20dBu out
<0.00085%
@ 40dB Gain +20dBu out
<0.0010%
@ 60dB Gain +20dBu out
<0.0050%
INTERMODULATION DISTORTION @ 40dB Gain +20dBu out

SMPTE/DIN 4:1 7kHz/50Hz
<0.0020 NOISE - REFERRED TO INPUT @60dB Gain 22Hz-22kHz BW 50Ω source
<-130dB
150Ω source
<-128dB
600Ω source
<-124dB
CMRR @60dB Gain, 3.5Vcm 100Hz
>60dB 1kHz >75dB 10kHz
>65dB
FREQUENCY RESPONSE
Mic input @ 40dBm Gain -3dB 3.7Hz-140kHz Hi-Z input @ 20dB Gain -3dB 1.2Hz-112kHz IMPEDANCE
Mic input 8.1kΩ Mic input, Ribbon mode 20kΩ Hi-Z input (unbalanced)
2.5MΩ
Hi-Z input (balanced)
5MΩ
Balanced Output
300Ω
Unbalanced Output
150Ω
PEAK LED METER
Green threshold
-10dBu Red threshold
+16dBu
MAXIMUM OUTPUT LEVEL
100k Ohm load, 0.1% THD +28dBu

EQ/COMP Section GAIN RANGE Output Trim -10 - +10dB EQ: 3 Bands of 0-12dB Cut or Boost Low Frequency Range 20Hz – 750Hz Mid Frequency Range 500Hz – 4kHz Mid Frequency Q 0.5 – 5 High Frequency Range 3kHz – 20kHz Low and High Frequency Peak/Shelf switches
Compressor – Inserts Pre or Post EQ Threshold Range -15 - +15 dBu Attack Range 3 – 200 ms Release Range 0.03 – 3 s Ratio Range 1:1 – 12:1 Gain Reduction 0 – 10dB

THD+N 1kHz, 22Hz-22kHz BW @ 0dB Gain +20dBu out <0.002% INTERMODULATION DISTORTION
@ 0dB Gain +20dBu out

SMPTE/DIN 4:1 7kHz/50Hz
<0.002% OUTPUT NOISE 22Hz-22kHz BW @0dB Gain <-78dB CMRR @0dB Gain, 3.5Vcm 100Hz
>75dB 1kHz >75dB 10kHz
>75dB FREQUENCY RESPONSE
@0dB Gain -3dB 0.016Hz-150kHz IMPEDANCE
Line In 24kΩ Main Out balanced 350Ω Main Out unbalanced 150Ω Link In – sidechain mode 100kΩ LEVEL METERS EQ Peak threshold 6 dB below interstage clipping Output Level VU Meter 0dB VU = +4dBu output Gain Reduction Meter 0-10dB Gain Reduction MAXIMUM OUTPUT LEVEL
100k Ohm load, 0.1% THD +28dBu

WEIGHT and DIMENSIONS
4.5 lbs
H1.7” x W19” x D9.0” 2.05 kg H4.3cm x W48.3cm x D22.9cm POWER CONSUMPTION
85-264VAC / 120-370VDC 14 Watts Max