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| Amplifiers | | Manufacturers | Model# | Model Year | Watts | Channels | Weight | Details | | | Edge Electronics | G-4.5 | 2004 | 100 | 4 Channels | 41 LBS | 100W, 4CH, 41 LBS | Pricing History |
| MBL | 8008 | 1997 | 60 | 4 Channels | - | 60W X 4 | Pricing History |
| Harman Kardon | PA-2000 | 2001 | 45 | 4 Channels | 25 LBS | 45W, 4 CH, 25 LBS | Pricing History |
| Bel Canto Design | EVO 200.4 | 2001 | 120 | 4 Channels | - | 120W X 4 | Pricing History |
| Surround Processors | | Bang & Olufsen | AV-7000 | 1993 | | 4 Channels | - | 4 CHANNEL, DOLBY PRO LOGIC | Pricing History |
| Amplifiers | | JM Labs | MODEL 302-4 | 2003 | 300 | 4 Channels | - | 300W, 4CH, HANDLES | Pricing History |
| Pioneer | M-72 ELITE | 1990 | - | 4 Channels | - | 4 CH | Pricing History |
| Receivers | | Pioneer | QX-747 | 1974 | 20 | 4 Channels | - | 20W X 4 | Pricing History |
| Pioneer | QX-949 | 1974 | 40 | 4 Channels | - | 40W X 4 | Pricing History |
| Amplifiers | | Proton | AA-2480 | 1998 | - | 4 Channels | - | 4 CHANNEL BRIDGEABLE | Pricing History |
| Luxman | M-111 | 1991 | 25 | 4 Channels | - | 25W X 4 | Pricing History |
| Receivers | | JVC | R-X5TH | 2000 | 50 | 4 Channels | - | 50W X 4 | Pricing History |
| Nakamichi | AV-3S | 1997 | 55 | 4 Channels | - | 55W, 4 CHANNELS, DSP PROC | Pricing History |
| Nakamichi | AV-2S | 1997 | 80 | 4 Channels | - | 80W, 4 CHANNELS, DSP PROC | Pricing History |
| Amplifiers | | Myryad | MXA-0152 | 2005 | 80 | 4 Channels | - | 80W, 4CH | Pricing History |
| Edge Electronics | MAV 4AV | 1996 | 300 | 4 Channels | - | 300W, 4CH | Pricing History |
| Myryad | MXA-4150 | 2005 | 150 | 4 Channels | - | 150W, 4CH | Pricing History |
| Dual | M-1100SW | 1998 | - | 4 Channels | - | 4 CHANNEL | Pricing History |
| Crown International | CL-4 | 2001 | - | 4 Channels | - | 4 CH | Pricing History |
| Crown International | CL-2 | 2001 | - | 4 Channels | - | 4 CH | Pricing History |
| Crown International | CL-1 | 2001 | - | 4 Channels | - | 4 CH | Pricing History |
| Crown International | CH-4 | 2001 | - | 4 Channels | - | 4 CH | Pricing History |
| Crown International | CH-2 | 2001 | - | 4 Channels | - | 4 CH | Pricing History |
| McIntosh | MC-7104 | 1995 | 100 | 4 Channels | - | 100W X 4 | Pricing History |
| Preamplifiers | | Shindo Labs | Vosne-Romanee | 2010 | | 4 Channels | 24 LBS | 6189, 6X4, 24 lbs | Pricing History |
| Amplifiers | | Crown International | CH-1 | 2001 | - | 4 Channels | - | 4 CH | Pricing History |
| Audio Research | SDA-1 | 1995 | 100 | 4 Channels | 37 LBS | 100W X 4, 37 LBS | Pricing History |
| Continuum Audio Labs | 4-3-2 | 1996 | 100 | 4 Channels | - | 100w, 4ch | Pricing History |
| Fosgate | 4125 | 1994 | 225 | 4 Channels | 38 LBS | 225w x 4, 38 lbs | Pricing History |
| Receivers | | Marantz | 4415 | 1973 | 30 | 4 Channels | - | 30W X 4 | Pricing History |
| Amplifiers | | JM Labs | MODEL 304 | 2003 | 250 | 4 Channels | - | 250W, 4CH, HANDLES | Pricing History |
| Receivers | | Marantz | 4240 | 1974 | 17 | 4 Channels | - | 17W X 4 | Pricing History |
| Marantz | 4230 | 1973 | 15 | 4 Channels | - | 15W X 4 | Pricing History |
| Marantz | 4220 | 1974 | 15 | 4 Channels | - | 15W X 4 | Pricing History |
| Amplifiers | | Marantz | MM-9340 | 2003 | 275 | 4 Channels | - | 275W, 4CH | Pricing History |
| Preamplifiers | | Shindo Labs | Masseto | 2007 | | 4 Channels | - | mm-mc, 6X4WA | Pricing History |
| Amplifiers | | Yamaha | M-35 | 1986 | 20 | 4 Channels | - | 20W X 4 | Pricing History |
| Receivers | | Marantz | 4400 | 1974 | 50 | 4 Channels | - | 50W X 4, WITH SCOPE | Pricing History |
| Amplifiers | | Citation | Citation 7.1 | 1996 | 150 | 4 Channels | - | 150w x 4 | Pricing History |
| Citation | Citation 5.1 | 1996 | 100 | 4 Channels | - | 100w x 4 | Pricing History |
| Lexicon | NT-412 | 1996 | 120 | 4 Channels | - | 120W X 4 | Pricing History |
| Audio Research | 150M X4 | 2003 | 150 | 4 Channels | - | 150W, 4CH, MODULE | Pricing History |
| Linn | CHAKRA C-4200 | 2005 | 200 | 4 Channels | - | 200W, 4CH | Pricing History |
| Audio Design Associates | AMPX4 | 2000 | 35 | 4 Channels | - | 35W X 4, CLASS AB | Pricing History |
| Linn | CHAKRA C-4100 | 2005 | 100 | 4 Channels | - | 100W, 4CH | Pricing History |
| Sim Audio | HT-200-4 | 2001 | 200 | 4 Channels | - | 200W, 4CH | Pricing History |
| Sony | TA-N220ES | 1993 | 45 | 4 Channels | - | 45W X 4, REMOTE | Pricing History |
| Soundcraftsmen | 300X4 | 1989 | 210 | 4 Channels | - | 210W X 4 | Pricing History |
| Naim Audio | NAP-V175 | 2002 | 50 | 3 Channels | - | 50W, 3 CH | Pricing History |
| Lexicon | NT-312 | 1996 | 120 | 3 Channels | - | 120W X 3 | Pricing History |
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