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l0aded / @
Gary in NJ, thanks for reaching out!
We absolutely will make sure your O+ solutions are adjusted to your preferred low frequency preset.
This is a service we will provide gratis

We just ask you cover the cost of shipping your O+ amp assembly both to and from the O+ acoustic lab. We utilize USPS when reprogramming the amps associated with the Reference upgrade (cost of shipping; round-trip is approx. $24).
Your Amplifier will be reconfigured and shipped back out the same day received (we want to minimize your going with out your O+ solution).
**Please PM us for order / shipping details so we can provide you all the appropriate collateral to expedite your request.**