MCI JH-636
A 36-input MCI console that turns up in the classifieds more often than it turns up in the history books. The used prices show who was buying it and when.
Overview
The JH-636 survives in the record mostly as inventory. There is no glossy launch copy to quote and no lab report to cite. What exists is a paper trail of studio sell-offs stretching across a decade. That trail shows what the console actually was: a working desk that changed hands as studios grew, shrank, and closed.
The earliest clear sighting in the trade press is in Recording-Engineer (December 1981, p.115). A seller lists an MCI JH-636-24 recording console, non-automated, with 24 inputs sitting on a 36-input mainframe. The frame was bigger than the channel count. A studio could buy a 36-input mainframe, populate it with 24 channels, and add strips later as the room grew. MCI used the same expandability logic across its line, and it is why so many surviving JH-636s are described with a channel count and a frame count that don't match.
By the following year the console shows up in a dealer's featured-equipment spread in DB-Magazine (May 1982, p.50), listed alongside an MCI JH-24 master recorder. That hints the JH-636 lived in rooms built around MCI's multitrack machines. A 36-input desk is a tracking console, and tracking consoles get bought with the tape machine they feed.
The configuration that appears most often in the classifieds is the automated 32x24. A Mix-Magazine listing from September 1983 (p.113) describes an MCI JH636 console with parametric EQ, automated, 32 x 24, sold in a package that also included a JH110A two-track/four-track. Sellers consistently call out the parametric EQ and the automation, which is a fair proxy for what buyers valued. A 1993 Mix-Magazine dealer ad (January 1993, p.113) lists an MCI JH636 32x24 with patch bay at $21k. That gives an idea of what a sorted, automated example was worth in the early '90s.
Two years earlier, a Mix-Magazine used-gear spread (December 1991, p.113) had advertised an "MCI JH636 w/ Auto" at $25K. The drop from $25k to $21k across two years says these were professional tools depreciating on a schedule, not collectibles appreciating. A Mix-Magazine listing from 1985 (April 1985, p.113) shows a new JH636-24GONU console with options discounted from $41,500 to $28,950. That is what the desk cost when it was current inventory rather than used stock.
The JH-636 also turns up in the personal accounts of people who owned one. In an Electronics & Music Maker studio profile, an owner describes running an automated JH636 with 36 inputs alongside a 24-track and two two-track recorders. He singles out the console's light meters as important for electronic percussion because they show the instant real level of the dynamics. It is a preference for LED metering over analogue meters, stated plainly by someone who used the desk daily. It is the closest thing to a user review the JH-636 has in the available record.
The available documentation gives no clean technical profile. There is no verified frequency response, no noise figure, no crosstalk measurement, no headroom spec, and no confirmed production run. Anyone who wants the full electrical picture will need the service manual, because the trade-press record is a market record, not an engineering one. What it does establish is a 36-input-frame MCI console, commonly automated, commonly fitted with parametric EQ, commonly paired with MCI multitracks, and sold new in the tens of thousands and used in the low twenties by the early '90s.
The JH-636 has no legend attached to it the way some MCI tape machines do. For a buyer today, the things to check are the frame size, the channel count, whether the automation is present and working, and whether the parametric EQ is fitted. Those variables determined what each individual console actually was.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.