Experience a more clear and natural sound representation throughout the entire frequency range with RSP-AZ9EX:  The Real Sound Processor from SPEC.

Hearing is believing! With the RSP-AZ9EX from SPEC, your audio system can deliver a more natural and realistic sound representation that is full of life and musicality. With it, you will be able to experience the full potential of your audio system. The RSP-AZ9EX is not just an audio-accessory but a genuine piece of hi-fi gear for improving the performance of your audio system dramatically.
Read more about it in the technical explanation below.

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The RSP-AZ9EX provides richer low frequencies and improved clarity in the mid-high frequency range. This has an especially beautiful effect on the sound of strings and piano recordings.

Technical explanation

When the amplifier drives the loudspeaker, the loudspeaker simultaneously generates a counter-electromotive force. This is because the speaker operates according to the same principle as a motor. This counter-electromotive current returns to the amplifier via the speaker cord, making it difficult to drive the speaker in accordance with the input signal.
This is because this current has a negative effect on the feedback loop causing complicated phase delays. This physical phenomenon impacts the sound quality of the audio system.
The RSP-AZ9EX absorbs this counter-electromotive force coming from the speaker, which enables the amplifier to drive the speaker more easily and effectively. The result is more accurate speaker drive, and a more reliable reproduction of the fine signals. Musicality is expressed by these fine and delicate signals. This is how your audio system will be able to reliably achieve such detailed musicality with the help of the RSP-AZ9EX from SPEC.


Technical Specifications

Compatible speaker impedancePreferably 10Ω or lower
Max amp outputPreferably 1 kW or lower
External dimensions100 x 47 x 117 mm (W×H×D)
Weight Approx.250g
Package contents2 units, 1 polishing cloth, Operational manual

* The effects will differ depending on your speaker system and the amplifier used with it.