The Behringer ACX1000 was one of the most feature-loaded acoustic amplifiers available at its price point when it was introduced, and it remains a genuinely practical gigging amp for acoustic players and singer-songwriters who need more than a single channel and a reverb knob. This 2004 example is in very good condition and fully working across both channels, all effects, and phantom power.

The layout is built around two independent channels that cover the most common live acoustic scenario — one instrument, one microphone — without requiring a separate mixer. Channel one is optimized specifically for piezo pickups, which is where most acoustic guitar players live, and includes an active three-band EQ, a pick attack control that shapes the transient response for fingerpicking or strumming, two independent feedback notch filters for zeroing in on problem frequencies before they become a problem, and separate gain and volume controls for precise level management. The phase button with status LED handles the phase issues that regularly plague acoustic instruments through a PA or amp — a simple, practical tool that gets used at nearly every gig. Channel two features a balanced XLR mic input with phantom power for condenser microphones, a quarter-inch line input for a second instrument, the same EQ and feedback controls as channel one, and an enhancer circuit in place of the attack control for adding presence and air to a vocal or secondary instrument signal.

Both channels share a tube emulation warmth circuit with a vintage-style VU meter that shows you exactly how much harmonic saturation you're adding — a genuinely useful visual reference rather than a cosmetic flourish. The onboard 24-bit stereo effects processor covers reverb, delay, chorus, flanger, tremolo, rotary speaker, stereo panning, and combination effects across 24 algorithms and 99 editable presets, four of which can be assigned for quick front-panel selection. The two 8" speakers running at 60 watts per side give this amp real volume for its size — enough to hold its own in a small band context or fill a restaurant or café without effort. No footswitch is included.

For an acoustic player who needs a self-contained, two-channel live rig with real feedback control, phantom power, and a usable effects section — all in a single combo — the ACX1000 at this price is a hard package to argue with.

Mahar's Vintage Guitars is a brick-and-mortar and web-based retailer. We are happy to talk with you before you make a purchase.   Please reach out if you feel so inclined! We cross market our items here and on our own site, so items are subject to sale elsewhere at any time (however we will never cancel a sale if it happens here first). See our profile here, our Google reviews as well as our 100% positive Reverb feedback. Also, Reverb limits us to only 25 pictures of our items. There is a good chance we have more. Contact us if you’d like to see them.

No sales tax for direct sale customers outside California. Reverb sales are always taxed.

SPECS:

• Case/Cover?: No
• Color: Black
• Dimensions: w 23.5" x h 17" x  d 12.25"
• Weight: 49 lbs
• Watts: 120 Watts
• Speaker 1 - 2: Dual-cone speakers plus a special HF driver
• Speaker 1 - 2 Size: 8"
• Speaker Code: See Pics
• Speaker 1 - 2 Cone: Original
• Extension Speaker Out? Yes
• Reverb or other effects?: 24-bit stereo multi-FX processor with 16 digital effects (Reverb, Delay, Chorus, etc.).
• Pedal: No
• Tolex/Tweed: Original
• Grille: Original
• Knobs: Original
• Handle: Original 
• Power Cord: Included
• Notes:

Shipping policy:

When you purchase this item you are hereby agreeing to this shipping policy. Used & Vintage amps are sold as-is because they can need service intermittently.  Everything is tested here in our shop on the way into our inventory, and again before shipping.  We will cover shipping damage, but we cannot be responsible for the failure of vintage components in 20-to-50-plus year old amps. Shipments will require signature on delivery, no exceptions.  If there is damage, the buyer must retain all packing materials intact and picture them immediately and send them to .  Less than 1% of our shipments are damaged in transit, and we are committed to making sure your item arrives safely, but we are taking these additional measures to make sure you are happy with your purchase.