![Sundown Audio | SIA-5000D [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/1027/5443/Screenshot_2025-10-02_142743__93845.1759429991.png?c=2 "Sundown Audio | SIA-5000D [USED/REFURBISHED]")
Used / Refurbished
Amplifiers in this section may show signs of use and light blemishes, but are 100% functional and tested.
Sort by:
![Sundown Audio | SIA-8000D [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/1025/5414/Screenshot_2025-10-02_140548__16595.1759428889.png?c=2 "Sundown Audio | SIA-8000D [USED/REFURBISHED]")
![Sundown Audio | SIA-3500Dv2 [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/1022/5403/SIA-3500D_V.2_1__42804.1758721674.jpg?c=2 "Sundown Audio | SIA-3500Dv2 [USED/REFURBISHED]")
![DS-18 | GFX-5K1 1-OHM [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/1013/5365/Screenshot_2025-08-06_151535__11158.1754508006.png?c=2 "DS-18 | GFX-5K1 1-OHM [USED/REFURBISHED]")
![SKAR AUDIO | SKv2-4500.1D [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/1008/5338/61en2Yz4gQL._UF8941000_QL80___00709.1750274626.jpg?c=2 "SKAR AUDIO | SKv2-4500.1D [USED/REFURBISHED]")
![PRV | A1MH-NANO [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/986/5265/wu8oele6dqykgf0gctw8__20774.1741808906.jpg?c=2 "PRV | A1MH-NANO [USED/REFURBISHED]")
![Surge Audio | PL-3000.1 [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/972/5216/20241108_143359__89920.1731094677.jpg?c=2 "Surge Audio | PL-3000.1 [USED/REFURBISHED]")
![Synergy | WTF 7.1D [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/970/5209/1730824336148__35145.1730824345.jpg?c=2 "Synergy | WTF 7.1D [USED/REFURBISHED]")
![Sundown | SAZ-1500D 15TH ANNIVERSARY EDITION [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/966/5348/Screenshot_2025-07-21_131723__06259.1753118648.png?c=2 "Sundown | SAZ-1500D 15TH ANNIVERSARY EDITION [USED/REFURBISHED]")
![DEAF BONCE | AAK-6000.1D [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/955/5144/db-aak-60001d_708__1_600x__43173__80899.1711638154.jpg?c=2 "DEAF BONCE | AAK-6000.1D [USED/REFURBISHED]")
![AVATAR | ATU-1500.1D [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/945/5084/AVATAR_ATU-1500.1__53099.1708982137.jpg?c=2 "AVATAR | ATU-1500.1D [USED/REFURBISHED]"){kind=avatar}
![Sundown Audio | SAE-2500D V.3 [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/934/5018/1705966604241__22153.1705966610.jpg?c=2 "Sundown Audio | SAE-2500D V.3 [USED/REFURBISHED]")
![Surge Audio | PS-2000.4 [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/838/4546/20230320_153010_HDR__02145.1679345264.jpg?c=2 "Surge Audio | PS-2000.4 [USED/REFURBISHED]")
![Sundown Audio | SIA-2500D [USED/REFUBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/737/3612/SIA-2500D-000__07818.1680121975.png?c=2 "Sundown Audio | SIA-2500D [USED/REFUBISHED]")
![Sundown Audio | SAE-2000D V.3 | [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/735/5049/1707599087315__73447.1707599094.jpg?c=2 "Sundown Audio | SAE-2000D V.3 | [USED/REFURBISHED]")
![Surge Audio | PS-7000.1 [USED/REFURBISHED]](https://cdn11.bigcommerce.com/s-p3mv4js9ze/images/stencil/160w/products/724/3541/20221005_155929__27633.1681746281.jpg?c=2 "Surge Audio | PS-7000.1 [USED/REFURBISHED]")
Amplifiers in this section may show signs of use and light blemishes, but are 100% functional and tested.