





Stereo powered mixer
A case making history: Montarbo 459S powered mixer isn’t just compact and powerful: it’s the evolution of an original concept developed more than fifty years ago, the contemporary version of many generations of Montarbo's powered mixers.
Its metal case became iconic amongst musicians over the sixties, and the open lids embedded in the enclosure still double as a mixer stand the mixer, jus like in the original model.
Under the bonnet you can feel the technology behind 459S:a multi-effects 56bit DSP, advanced protection circuits on the amps, plenty of horse power to drive your PA.
The mixer shows 8 mono inputs, and the power outputs of the on-board AB-class power amplifier are able to provide up to 320W for each of the 2 channels.

Caratteristiche
- 200 + 200 W continuous into 4 Ohms
- 10 inputs / 8 channels (6 mono + 2 stereo)
- 6-band stereo graphic equalizer
- Effect send
- Auxiliary send
- Stereo digital effects processor based on a 56 bit DSP with 24 bit Delta Sigma conversion
Product Code: 1705F000196
TECHNICAL SPECIFICATIONS
Input Section
Micro (balanced - XLR) sensitivity | -60 dB |
Micro impedance | 2.2 kohms |
Line (unbalanced - jack) sensitivity | -32dB |
Line impedance | 10 kohms |
Stereo L/R (unbalanced - jack) sensitivity | -48dB |
Stereo L/R impedance | 33 kohms |
Channel gain range | 30 dB |
Noise referred to input | -124 dB |
Channel tone controls | treble ± 15dB @ 15 kHz mid ±15dB @ 600Hz bass ±15dB @ 50 Hz |
Effects section
Stereo digital processor (Reverb, Echo, Halo, Echo+Reverb) and External Effect
AD/DA conv. | 24-bit Delta-Sigma |
DSP | 56-bit |
Bandwidth | 40Hz÷15kHz |
Signal-to-noise-ratio | > 85 dB |
T.H.D | < 0,1% |
Effect send nom. level | 0 dB |
Master section
Frequency response | 25Hz÷25kHz, +0/-2 dB |
Signal-to-noise ratio | 80dB (nom. levels, eq.flat) |
Graphic equalizer | ±12dB / 80 - 200 - 500 Hz 1,6 - 4 - 10 kHz ±12dB |
Insert in/out L/R | nom. level 0 dB |
Aux output | nom. level: 0dB max. level: +20dB |
Tape in nom. level | -10dB |
Tape out nom. level | -20 dB |
Amplifier
Total output power | 200 + 200 W continuous W / 4 ohms 320 + 320 W peak W / 4 ohms |
Frequency response | 30Hz÷25kHz, +0/-2 dB |
Protections | electronic protections, relais for delayed power-up sequence (5 sec.), automatic troubleshooting |
Enclosure
Dimensions | 465 x 820 x 380 mm [15.75" x 18.3" x 7.9"] |
Weight | 16 kg [35.2 lbs] |
Cabinet | Metal |