NIDA Mk1 loudspeaker system has a very high sensitivity of 97,5 dB/W/m for LF and 110 dB/W/m for HF channel. Minimal impedance is around 8 Ohms for both channels (LF and HF) and is very consistent throughout the frequency range, this is an optimal load for power amplifiers. High sensitivity of the system allows using low power vacuum tube amplifiers but use of transistor amplifiers results in a much better dynamic range.

If you decide to use your own power amplifiers, than we can recommend the following:

• low frequency channel should have amplifier power output of 100-300 Watts
• high frequency channel should have amplifier power output of 20-50 Watts but for HF channel it is better to use class “A” amplifiers. The reason is simple: horn systems require very little power and at low signal levels consume only 1/1000th of watt. At these power level amplifiers working in “AB” class have higher levels of harmonic and IM distortion.

We recommend the use of ACCUPHASE amplifiers. A list of all the equipment you can find here. Prices we will provide after receiving your request.

Phase characteristics of power amplifiers are an important factor for high definition active loudspeaker systems and for this reason we recommend to consult us when you select power amplifiers for your NIDA Mk1 system.