Marantz SM11s1: Premium Stereo Power Amplifier

The new SM11S1 is powerful. Very powerful. Thats because it takes as much as possible from the highly acclaimed Reference Series MA9S2. The result? A powerful, highly dynamic stereo main amplifier, offering an open, transparent, and precision sound.

As you would expect, this current feedback technique amplifier can easily handle demanding Loudspeakers. For extreme set-ups, the bridge mode (BTL mode) can convert the stereo amplifier SM11S1 to a 400 W mono amplifier. The two-stage circuit construction (voltage amplification first to increase audio signal, buffer amplification second to ensure high current delivery) guarantees an excellent signal to noise ratio and the full control of any speaker. Thanks to the adjustable gain factor the SM11S1 can also upgrade the PM11S1 integrated amplifier, creating an excellent bi-amp system set up. Switching on/off can be remote controlled via a DC trigger from SC11S1 or other sources. Prepare to be exhilarated to a scintillating audio experience with crystal clear transparency.

- Stereo power amplifier in-current feedback technology
- Technologies derived from the Reference Series MA9S2
- Ultra stable power output of 2 x 100 Watts at 8 Ohms and 2 x 200 Watts at 4 Ohms rms
- In monaural mode - Bridge Mode (BTL) - up to 1 x 400 W at 8 Ohms
- Fast and accurate signal handling for signals up to 100 kHz and higher
- Audiophile 2-stage circuit concept with voltage and power buffer amplifier stages
- Instantaneous current delivery capability
- Gain factor selectable 17.5 dB / 23 dB / 29.5 dB - can be used to upgrade PM11S1
- HDAM SA2: High speed amplifier module with new high precision Melf resistors
- High speed input buffers keeping the full integrity of the signal
- Customised Blue Cap film capacitors used in SC7S2 and MA9S2
- Large Toroidal transformer with anti magnetic aluminium shield case
- Output level meter in low noise LCD technology - 3 digit per channel
- Each one stereo balanced XLR and stereo unbalanced input
- Two pair low impedance WBT speaker terminals for bi-wiring
- Heavy, 5 mm thick, copper plated aluminium top lid and aluminium die-cast feet
- DC trigger for remote on/off switching

Marantz SM-11s1 Premium Stereo Power Amplifier Specifications 
Features
Channels 2
Current Feedback Topology o
Linear Drive Power Supply o
CCNE o
BTL Possibility o
Power Transformer: Toroidal / El o/-
Shottky diodes o
HDAM version SA3
High Grade Audio Components o
Customised Components o
Input buffer amp (all inputs / CD only) o/-
Symmetric Parallel PCB Layout o
Alminum extrusion heat sink o
Separate Solid Heat Sinks o
System block shielding: Copper / metal / none -/-/-
Copper plated chassis o
Double Layer Bottom Plate o
Low Noise LCD display o
Power Meter : Analog / Digital -/o
Balance / Bass / Treble / Loudness -/-/-/-
Power Amp direct o
5mm aluminium top plate o
 
Inputs/outputs
Phono Input: MM/MC -/-
Balanced In/Out 1/-
Pre-out / Main-in -/2
Power Amp Direct IN o
Gold plated Cinch o
Speaker A/B o
Speaker Terminal: Screw / Marantz / WBT -/-/o
Number of terminals 4
Remote Power Control (Trigger - in/out ) 1/-
I-Pod input (direct / docking station) -/-
 
Power
Power Output (8/4 Ohm RMS) 100/200 W
Power Output (8/4 Ohm DIN) 130/220W
Power Output (8/4 Ohm IHF) 150/280W
Bridged Power Output (8 Ohm RMS) 400 W
Frequency response 5Hz-100kHz +/-3dB
Total Harmonic Distortion 0.01%
Damping Factor 200
Signal to Noise Ratio: MM/MC -/-
Input Sensitivity: High level 2.0V /20kOhm
Input Sensitivity: Balanced High level 2.0V /40kOhm
Signal to Noise Ratio: High level 115dB
 
General
Metal Front Panel o
Power Consumption in W 450
Detachable Power Cable o
Maximum Dimensions (W x D x H) in mm 440x429x168
Weight in kg 27.0