We are offering the following modification for the ISA 428:
– New, high performance op-amps on EVERY analog input and output (mic preamps, line inputs, inserts, instrument inputs, and line outputs)
– New, high-grade signal path capacitors on EVERY analog input and output (mic preamps, line inputs, inserts, instrument inputs, and line outputs)
– Improving the performance of the analog stage circuits makes a drastic difference for tracking, mixing, and mastering (expect amazing micro-dynamics and space)!
Experience how smooth, open, and detailed the ISA 428 modification sounds!
Booking a Mod
A 50% down payment will be collected during checkout for booking a modification. The remaining 50%, plus return shipping, will be due when the modification is complete. You will be prompted to choose a mod date when you add a mod to your cart. After booking, you will receive an email confirming your chosen “mod date” and shipping details.
The interface is not included in the mod price. You must supply us with an interface to be modified.
We often get asked our opinion on how one interface compares to another, so we’ve decided to create a rating system based on subjective A/B listening tests. The scale is from 1-10, with “1” being unimpressive audio quality and “10” being true audio excellence. This is an exponential scale, so going from “1” to “2” isn’t nearly as big of a jump as going from “9” to “10”. Please keep in mind, we only modify an interface if we can make a significant improvement to the sound. All of our ratings are ultimately a matter of opinion. To view how we rate all of our mods, click here.
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