Serial number indicates this was made 03/27/02. It has never failed to do its job. Shown with green and red lights illuminated. These really super clean your definition on the clean channel.

Specs:

The BBE Processing Engine

• Low Contour Boost: Up to +12dB frequency enhancement centered around 50Hz to tightly dial in the low-end punch of a bass or the heavy chug of a guitar cabinet.
• Process Control: Up to +12dB of high-frequency definition enhancement centered around 5kHz, pulling out pick attack, string definition, and upper-mid harmonics.
• Phase-Correction Group Delay: Applies a precise 2.5ms time-delay to the lower frequencies relative to the high frequencies. This mirrors speaker physics to guarantee that the high end hits your ears at the exact same moment as the low end, eliminating sonic mud.

Technical Performance

• Total Harmonic Distortion (THD): Less than 0.1% across the active processing bandwidth, keeping your core guitar or bass tone transparent without adding unwanted distortion.
• Signal-to-Noise Ratio (SNR): Greater than 102dB, ensuring that even when placed after high-gain overdrive or distortion pedals, it won't introduce excessive background hiss.
• Frequency Response: 5Hz to 30kHz (±0.5dB in bypass mode).