Go to Top
  • Deal Alerts!
  • |
  • Request a Catalog
  • |
  • Currency ()
  • |
  • En Español Español
Call or chat with us now!
U.S. Power Requirements & Currency Exchange Rates Accept
U.S. Power / Voltage

By completing your order, you understand that the products(s) you are purchasing are U.S. models and may have power / voltage requirements different from that of your country.

Currency Exchange Rates

Prices shown in currencies other than US Dollars are estimates based on current exchange rates. We will charge your credit card in US Dollars on the day your order is shipped, and the conversion to your local currency will be done at the prevailing rate by your credit card issuer.

PSSL will not mark your parcel as a “gift”, declare a value lower than the actual price paid, or otherwise prepare false customs information.

Get Notified
Get Notified When In Stock
Receive an email the moment this item hits our warehouse.
Enter your name and email to be notified when this product is in stock and ready to ship. Place your order now to reserve your place in line. Your credit card is never charged until your order ships. No spam here, just an in-stock notification.
First Name:
Last Name:
Extended Warranty Plans
2 or 4 Years of Additional Coverage Protect your investment with an Extended Warranty Plan from Consumer Priority Service. Purchasing this protection for your product guarantees you the very best post-manufacturer warranty support. With an Extended Warranty plan, you have instant access to a skilled team of customer service and repair experts available to answer any of your product service questions or to assist you through a hassle-free claim, should the need arise. The shield means youre protected.

Boss ACS-LIVE Acoustic Singer Live Amplifier

Boss ACS-LIVE Acoustic Singer Live Amplifier
Boss ACS-LIVE Acoustic Singer Live Amplifier
Boss ACS-LIVE Acoustic Singer Live Amplifier
Boss ACS-LIVE Acoustic Singer Live Amplifier

Boss ACS-LIVE Acoustic Singer Live Amplifier

By Boss
Item #108570
(0 Reviews)
List Price: $649.99
USD$499.99 Request Price Match
You Save: USD$150.00 (23% Off)
Finanicing Available
Financing Available
Personal or Business Click Here
Request a Price Match
Consult one of our Guitar & Bass Advisors
Sales Advisor
Plus Free Tech Support—
get great advice and support on your purchase from our highly trained Sales Advisors.
Call 800-268-5520

Boss ACS-LIVE Acoustic Singer Live Amplifier

The Acoustic Stage Amp Redefined
The Acoustic Singer Live takes the acoustic stage amp to new levels of sound quality and creative versatility. Incorporating Boss’s latest advancements in amplifier research, this compact powerhouse produces rich, vibrant sound with unmatched punch and clarity. Independent channels are provided for acoustic guitar and vocal, and each is equipped with discrete analog input circuits and three-band EQ for studio-quality sound. And with additional features such as Acoustic Resonance, looping, automatic vocal harmonies, effects, and much more, the Acoustic Singer Live gives acoustic musicians everything they need to deliver inspiring and impactful live performances.

Natural Sound with Power, Definition, and Presence
Amplifying your acoustic guitar with the Acoustic Singer Live is a truly inspiring experience. Boss engineers worked tirelessly to accurately reproduce the instrument’s fast transient response and natural, three-dimensional feel, and each amplifier element was carefully developed to achieve this. A powerful bi-amp design with extended peak power delivers tight, high-definition sound with ultra-clean broadband frequency response. The custom woofer and dome tweeter feature innovative materials and precision design points that work together to fill the stage with rich, naturally diffused sound. Other fine details include a unique cabinet construction method that eliminates unwanted resonances, and an integrated tilt-back design for maximum projection.

Guitar Channel with Acoustic Resonance
The Acoustic Singer Live’s guitar channel features a discrete analog input circuit that provides ample headroom for the quick attack and wide dynamic range of the acoustic guitar. Also included is Boss’s Acoustic Resonance, which employs advanced processing to eliminate the hard, sterile sound produced by the piezo pickups in most stage guitars. This powerful feature not only enhances the character of your pickup, but also restores the complex natural resonances that are so often lost when amplifying your acoustic. The channel provides a three-band EQ as well, plus a phase switch and notch control for keeping feedback issues at bay. Two types of chorus effects and a guitar-optimized reverb are also on hand to add a finishing touch to your sound.

Mic Channel for Vocals and More
The Acoustic Singer Live also includes a dedicated mic channel, giving singing guitarists a compact, all-in-one amplification solution. A discrete analog input circuit delivers full, clear sound, and phantom power is on tap for using studio-grade condenser microphones. There’s also a three-band EQ, phase switch, and anti-feedback notch control, plus top-quality delay/echo and reverb effects to enrich your vocal sound. If you’re using the Acoustic Singer Live for guitar only, this channel can alternately be used to mic up your acoustic. For players that use advanced setups, it also works great for blending another amplification source installed in the guitar, such as a second pickup or an internal mic.

Automatic Vocal Harmonies and Looping
A standout feature of the Acoustic Singer Live is its vocal harmony function, which creates live harmonies as you sing and play guitar. It all happens automatically, so there’s no complicated setup needed. Your chord progressions are analyzed in real time, generating impressive harmonies perfectly tuned to the key of your song. And if you modulate to a new key, the intelligent processing follows along smoothly and accurately. Two different harmony types are available, plus a unison setting that doubles your voice for more impact. The amp’s built-in looper provides even more creative fun, allowing you to build live backing with guitar, vocals, effects, and more.

Advanced Connectivity and Control
The Acoustic Singer Live’s rear panel is well stocked for your interfacing needs. Dual DI/Line outputs are provided on XLR connectors, and each features a versatile mode switch for outputting both channels mixed together, or individual channels direct or post-effects. There’s also an aux input with level control, perfect for playing backing music from your mobile device. A USB jack offers a direct computer connection to a DAW, while the Rec/Phones jack provides a standard ¼-inch stereo connection for quiet practice sessions or recording to portable devices. Numerous jacks are also available for controlling the harmony function, looper, effects, and more via optional footswitches.


  • Professional acoustic amplifier with premium sound and features
  • 60–watt bi-amp design with custom-designed 6.5-inch woofer and dome tweeter
  • Dual channels with discrete analog input electronics and three-band EQ
  • Dedicated guitar channel with Acoustic Resonance to restore natural tone to stage guitars with piezo pickups
  • Mic channel with phantom power and ¼-inch/XLR combo input for connecting a vocal/guitar microphone or second instrument source
  • Chorus effect on guitar channel, delay/echo effect on mic channel, and independent reverb on both channels
  • Harmony function automatically creates smooth and accurate vocal harmonies via real-time key/chord analysis of the guitar input
  • Built-in looper for practicing, developing ideas, and enhancing live performances
  • Independent anti-feedback controls on each channel
  • Dual XLR DI jacks assignable to outputting individual channels (direct or post-effects) or both channels mixed together
  • USB output for direct recording to a computer
  • Control looper, harmony, and effects with optional footswitches


  • Rated Power Output
    • 60 W (Woofer: 50 W, Tweeter: 10 W)
  • Nominal Input Level
    • Mic Input: -33 dBu (2.5 k ohms)
    • Guitar Input: -10 dBu (5 M ohms)
    • AUX Input: -8 dBu (10 k ohms)
  • Speaker
    • 16 cm (6.5 inches) Woofer x 1, 2.5 cm (1 inch) Dome Tweeter x 1
  • Controls
    • Power Switch
    • Master Knob
    • Tweeter Att Button
    • Mute Button

    • [Mic]
      • Pad Button
      • Phantom Switch
      • Volume Knob
      • Bass Knob
      • Middle Knob
      • Treble Knob
      • Anti-Feedback Knob
      • Phase Button
      • Delay/Echo Knob
      • Reverb Knob

    • [Guitar]
      • Pad Button
      • Acoustic Resonance Button
      • Volume Knob
      • Bass Knob
      • Middle Knob
      • Treble Knob
      • Anti-Feedback Knob
      • Phase Button
      • Chorus Knob
      • Reverb Knob

    • [Harmony]
      • On Button
      • Type Button
      • Level Knob

    • [Looper]
      • Looper Button
      • Stop/Clear Button

    • [Aux]
      • Level Knob

    • [Di/Line Out]
      • Mic/Mix: Out Select Switch
      • Guitar/Mix: Out Select Switch

  • Indicators
    • Tweeter Att
    • Mute

    • [Mic]
    • Pad
    • Phase

    • [Guitar]
    • Pad
    • Acoustic Resonance
    • Phase

    • [Harmony]
    • On
    • High
    • Unison
    • Low

    • [Looper]
    • Rec
    • Play
    • Overdub

  • Connectors
    • Mic jack: Combo type (XLR, 1/4-inch TRS phone type)
    • Guitar jack: 1/4-inch phone type
    • Aux In jack: Stereo miniature phone type
    • Phones/Rec Out jack: Stereo 1/4-inch phone type
    • DI/Line Out Mic/Mix jack: XLR type
    • DI/Line Out Guitar/Mix jack: XLR type
    • Foot Control Looper/Chorus jack: 1/4-inch TRS phone type
    • Foot Control Harmony/Mute jack: 1/4-inch TRS phone type
    • GA-FC jack: 1/4-inch TRS phone type
    • USB port: USB B type
    • AC In jack
  • Power Consumption
    • 40 W
  • Accessories
    • Owner's manual
    • Power cord
    • GA-FC sticker
  • Options (sold separately)
    • Footswitch: FS-5U, FS-6, FS-7
    • Expression pedal: FV-500L、FV-500H、Roland EV-5
    • GA Foot Controller: Roland GA-FC

  • Size and Weight
    • Width
      • 367 mm
      • 14-1/2 inches
    • Depth
      • 274 mm
      • 10-13/16 inches
    • Height
      • 314 mm
      • 12-3/8 inches
    • Weight
      • 10.5 kg
      • 23 lbs 3 oz
… [ More ]
Related Articles
Related Products
Product Videos
Questions & Answers
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!
Boss ACS-LIVE Reviews
There are no reviews for this item. Write Review
Recently Viewed Products
Sign up for exclusive Deal Alerts:
Call Us: (800) 750-7800 Email Us Get a Free Catalog
Back to Top
Call (800) 268-5520
Mon-Fri 7am-7pm, Sat 8am-5pm (pst)
Visit Our Showroom [map]
14800 Goldenwest St.
Westminster, CA 92683
Mon-Fri 10am-6:30pm
McAfee Secure sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
5-Star Guarantee
Deal Alerts!
Connect with us on our Social Networks:
Facebook Instagram Twitter YouTube