BLOCK AUDIO DUAL MONO PREAMPLIFIER


Block Audio Dual-Mono line Control Amplifier (preamplifier) and Power Block power supply….

Taking a rest while the preamplifier takes over control of every essential detail is the only thing you have to do. The Line Block adds the desired level and settings to the signal, while the required electricity is provided by the Power Block, which runs on batteries and allows you to enjoy the ultimate quality of sound for at least 15 hours. When the battery is empty, the Power Block automatically sets the recharge mode and works as an energy reservoir. So you can stay hungry for the sound while your power amplifiers are being fed. Moreover, the Line Block also guards the temperature of the Mono Blocks through the communication channel.* And you? You can still continue on listening to your favorite records on and on.

Battery supply for audio circuits - each channel is powered by its own battery bank. Both channels, supply units and non-audio circuits are physically separated, shielded and electrically isolated. Short audio signal paths without any internal wiring


FEATURES
  • Battery powered
  • Dual-Chassis & Dual-Mono configuration 
  • Both channels, supply units and non-audio circuits are physically separated, shielded and electrically isolated 
  • Battery supply for audio circuits - each channel is powered by its own battery bank 
  • At least 15 hours battery operation and a smart automatic function to activate the charging mode when the battery is running out or preamp is switched off 
  • Short audio signal paths without any internal wiring Overall symmetrical design Separate grounds for left and right channel Class-A operation, all discrete audio circuitry DC signal coupling with Servo-Control Symmetrical relay volume attenuator 2 × 120 000 µF of power supply-filter capacitance 
  • Adjustable input sensitivity and channel balance 
  • Full HT bypass function for all inputs Output phase invert function Two custom made low-noise and low-radiation toroidal transformers in decoupled and suspended mount cases
  • Individual and physically separated and electrically isolated power supply for non-audio circuits 
  • Adjustable feet with integrated spikes 
  • User-selectable Battery or AC Mains operation mode 
  • Built-in Class-A headphone amplifier 
  • User-selectable Auto Power Off mode 
  • Auto brightness controlled graphical display and status LED Infrared remote control 
  • Built-in MC/MM Phono stage with remotely controlled settings System rem. control for power amplifier*


TECHNICAL SPECIFICATIONS

Distortion: THD+N < 0.0005%
IMD < 0.0007% at 6 Vrms out
Frequency Response: DC - 300 kHz -0.5 dB
DC - 20 kHz -0.01 dB
Signal/Noise Ratio: >130 dB A-weighted >128 dB unweighted related to full output
Channel Separation: Infinite (>130 dB)
Max. Voltage Gain: +12 dB balanced
+18 dB unbalanced
Input Impedance: 40 kΩ balanced
20 kΩ unbalanced
Output Impedance: 50 Ω balanced
25 Ω unbalanced
Maximum Output Voltage: 20 Vrms balanced
10 Vrms unbalanced
Inputs: 4 balanced (XLR) pairs
5 unbalanced (RCA) pairs
Outputs: 2 balanced (XLR) pairs
2 unbalanced (RCA) pairs
Battery Operation Time: >15 hours
System Remote Control: Yes*, Neutrik RJ45
Power Consumption: 150 W max. at charging
50 W at idle, <0 .5="" i="" in="" standby="" w="">
Mains Voltage: 230/115 V AC, 50/60 Hz
factory pre-configured
Dimensions - Line: 460(w) × 105(h) × 360(d) mm
Dimensions - Power: 460(w) × 105(h) × 360(d) mm
Weight in total: 28 kg, ~40 kg shipping

* works only in combination with the appropriate BLOCK AUDIO Power Amplifier