PRESONUS EUREKA CHANNEL STRIP WITH REVIVE AUDIO MODS

PRESONUS EUREKA CHANNEL STRIP WITH REVIVE AUDIO MODS

This Eureka is in very good cosmetic condition (with rack rash on the case bottom) and excellent functional condition.  I has a Class-A transformer coupled preamp that delivers up to 52 dB of mic gain with variable input impedance to match different microphones, subtle saturation control, a VCA compressor having adjustable parameters, a soft-knee option, and an 80 Hz sidechain high-pass filter to prevent low-frequency pumping, a three band (overlapping) parametric EQ, and an expansion slot for an optional 192 kH/24-bit digital output card if you can find one.

The Revive Audio upgrades to the internal audio path really improve this device (cleaner, warmer, and more professional signal). The key upgrades are:

Op-Amp Replacements: Swaps stock chips for high-performance options (Burr-Brown or LT1357 I’m not sure which) to improve transient detail and clarity.

Transformer Options: premium input transformers (such as Jensen) to enrich the low-end frequency response.

Capacitor Upgrades: Replaces undersized electrolytic capacitors to maximize bandwidth and power supply stability.

These upgrades lower the overall noise floor and increase headroom and dynamic range.  Overall, the high-end and low-end detail are greatly improved (rounder, more musical tone).

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