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Supro 1685RT Neptune 2x12 25 Watt Combo


SKU: 1685RT

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Supro 1685RT Neptune 2x12 25 Watt Combo

Supro USA presents the 1685RT Neptune Reverb amplifier. This 25W, 2x12 combo amp was created in response to artist and backline requests for a Supro amp with a pair of 12” speakers and spring reverb. Developed in partnership with SIR, the USA’s largest backline rental company, the Supro Neptune amplifier is a loud, clear answer to the Fender Twin and Vox AC-30.

The Neptune’s microphone-friendly midrange is largely derived from its vintage-correct, 25W; Class-A power section. It is this unique, “self-biasing” power amp that holds the key to the vintage Supro sound. The Neptune Reverb’s remarkably low noise floor makes this amp perfect for live performance at any volume. Even when pushed hard, the Neptune’s power section overdrives with a distinctive clarity, leaving plenty of front-end headroom for use with all kinds of stompbox effects.


• 25 Watts, Class-A power 
• Independent BASS and TREBLE controls
• All-tube spring reverb
• Output-tube tremolo
• Self-Biasing power amp
• 2x 6973 power tubes
• 4x 12AX7/ECC83 JJ tubes
• 1x 12AT7/ECC81 JJ tubes
• 2 x 12” Supro BD12 Black Magick speakers
• Blue Rhino Hide Tolex
• Assembled in Port Jefferson, NY – USA

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