Product Description | Year Released | List Price | Average Price | Pricing Trend | Number Tracked | Resale Popularity | 4-Pole Filter | 1998 | $500 | $229 | ![](/graphics/TrendUp.gif) | 33 | ![](/graphics/Popular4.gif) | MicroQ | | | $497 | ![](/graphics/TrendDown.gif) | 397 | ![](/graphics/Popular2.gif) | Microwave | | $2,000 | $690 | ![](/graphics/TrendDown.gif) | 112 | ![](/graphics/Popular2.gif) | Microwave II | 1998 | $1,300 | $489 | ![](/graphics/TrendDown.gif) | 74 | ![](/graphics/Popular2.gif) | Microwave XT | 1998 | $2,000 | $675 | ![](/graphics/TrendDown.gif) | 220 | ![](/graphics/Popular2.gif) | Pulse | 1996 | $650 | $383 | ![](/graphics/TrendFlat.gif) | 150 | ![](/graphics/Popular2.gif) | Pulse+ | | | $460 | ![](/graphics/TrendFlat.gif) | 57 | ![](/graphics/Popular2.gif) | Q Keyboard | | | $1,390 | ![](/graphics/TrendDown.gif) | 115 | ![](/graphics/Popular3.gif) | Q Rack | 1999 | $1,600 | $847 | ![](/graphics/TrendUp.gif) | 50 | ![](/graphics/Popular2.gif) |
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