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| Surround Processors | | Manufacturers | Model# | Model Year | | Channels | Weight | Details | | | Denon | AVR-4800 | 2000 | | 5 Channels | 48 LBS | 125W, 5 CHANNEL, THX, 48 LBS | Pricing History |
| Harman Kardon | AVP-1 | 1992 | | - | - | AUDIO FOR VIDEO PROCESSOR, THX | - |
| JBL | SDP-3 | 2001 | | 8 Channels | - | 8CHANNEL, DOLBY DIGITAL, THX | Pricing History |
| JBL | SDP-2 | 1998 | | - | - | THX, DOLBY DIGITAL | - |
| Krell | STANDARD 7.1 | 2004 | | - | - | PRE,PROCESSOR, DOLBY DIGITAL, DTS, THX | - |
| Lexicon | MC-4 | 2004 | | 8 Channels | - | 8 CHANNEL, THX ULTRA 2, DOLBY DIGITAL EX | Pricing History |
| Lexicon | MC-8 | 2003 | | - | - | DTS, PRLOGIC 7,THX ULTRA2 | - |
| Lexicon | DC-2 AC3 | 1999 | | - | - | DOLBY DIGITAL, THX ULTRA | - |
| Lexicon | DC-2 THX | 1999 | | - | - | PRO LOGIC, THX ULTRA | - |
| Lexicon | DC-1 | 1998 | | - | - | VERSIONS INCLUDE THX, AC3 | - |
| Lexicon | CP-3 PLUS | 1995 | | - | - | DSP AND THX, CROSSOVER, VID SWITCHANNELING | - |
| Meridian | G-68J | 2005 | | - | - | THX ULTRA 2 | - |
| Meridian | 861 V3 | 2002 | | - | 40 LBS | DOLBY, THX, DTS, 40 LBS | - |
| NAD | M-15 | 2005 | | - | - | DOLBY DIGITAL, ULTRA 2 THX | - |
| Onkyo | DTR-9.1 | 2001 | | - | - | DOLBY DIGITAL,DTS,THX , EX | - |
| Paradigm | AWM-30 | 2004 | | - | - | DOLBY DIGITAL, THX | - |
| Paradigm | D-1 | 2004 | | - | - | DOLBY DIGITAL, DTS, DOLBY DIGITALEX, THX | - |
| Parasound | PSP-1500 | 1998 | | - | - | PRO LOGIC, THX | - |
| Rotel | RDA-980 THX | 1997 | | - | - | THX PROCESSOR | - |
| Rotel | RSP-980 | 1996 | | - | - | THX PROCESSOR | - |
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