GML 8200 Parametric Equalizer

The GML 8200 Parametric Equalizer is the stereo bus EQ by which all others are measured — a five-band precision equalizer designed by George Massenburg, the engineer who invented and coined the term “parametric equalization.” Nearly forty years after its introduction, the 8200 remains a fixture on the stereo bus of major recording studios worldwide, prized for its extraordinary resolution, benchmark transparency, and surgical precision that competing designs have referenced but not surpassed. Providence Sound And Vision carries the GML 8200 as part of its preowned and vintage inventory, offering Los Angeles mixing and mastering engineers the opportunity to work with one of the most respected pieces of signal processing hardware ever built — fully tested, serviced, and backed by PSV’s lifetime support.

Key Features

• Five Broadly Overlapping Parametric Bands — Each band offers up to 15 dB of boost or cut with fully adjustable bandwidth, and the bands are designed to overlap generously so complex tonal corrections can be made without fighting adjacent frequencies.
• Adjustable Q (Bandwidth) from 0.4 to 4 — Dial in broad, musical shelving-style curves at lower Q values or narrow, surgical notches at higher settings — the 8200 covers the full range of corrective and creative EQ tasks on a single unit.
• Shelf Modes on Low and High Bands — The lowest and highest bands can be switched from parametric to shelf mode, making the 8200 equally at home shaping low-end weight or adding high-frequency air on a stereo mix.
• Stereo Two-Channel Design — Built as a true stereo unit, the 8200 processes both channels with the phase coherence and gain-matched precision that stereo bus work demands.
• Benchmark Transparency and Headroom — The 8200’s circuit design is engineered for vanishingly low coloration at unity gain, so engineers can make precise tonal corrections without introducing noise, distortion, or unwanted character.
• Industry-Standard Pedigree — Found on the stereo bus of virtually every major recording studio for nearly four decades, the 8200 is not merely well-regarded — it is the archetype against which parametric equalizers are evaluated.

Specifications

• Type: Stereo parametric equalizer
• Bands: 5 (per channel)
• Boost / Cut: ±15 dB per band
• Bandwidth (Q): 0.4–4
• Shelf Modes: Bands 1 (low) and 5 (high)
• Format: 2U rackmount
• Power: Requires GML 8355 PSU
• Condition: Very Good — tested and serviced by Providence Sound And Vision technicians