Boss ACS Acoustic Singer Live

Amplifier for Acoustic Guitar and Vocals

  • 60 W Bi-Amp Design
  • 2 Independent channels with discrete analog input circuit and the 3-band EQ
  • Speakers: Specially developed 6.5" woofer and tweeter
  • Guitar channel with "Acoustic Resonance" to make the sound of piezo pickups sound natural
  • Microphone channel with phantom power
  • XLR / TRS combo port
  • Chorus FX for guitar channel
  • Delay / Echo FX for microphone channel
  • Additional delay / echo-FX for both channels can be controlled independently
  • Harmony feature automatically generates vocal harmonies by real-time key / chord analysis on guitar input
  • Integrated looper
  • Anti-independent feedback control for each channel
  • Two XLR DI sockets for the output of the individual channels (or directly by the effect section) or both channels
  • USB port for direct recording to a connected computer
  • Dimensions (L x W x H): 367 x 274 x 314 mm
  • Weight: 10.5 kg
  • Matching footswitch available under Art. 279994 (not included)
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Sound samples

 
0:00
  • Swing Fiddle
  • Swing Fiddle Line
  • Mandolin Folk
  • Mandolin Folk Line
  • Bossa
  • Bossa Line
  • Country
  • Country Line
  • Picking
  • Picking Line
  • Male Vocal
  • Ukulele Jazz
  • Ukulele Jazz Line
  • Show more

Further Information

Power in Watts 60
Speaker size 2x 6,5", 1x HT
Channels 2
Reverb Yes
Effects Unit Yes
External FX Loop No
Microphone Input Yes
Line Input Yes
Battery Operation No
Footswitch Connector Yes
Incl. Footswitch No

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5 / 5.0
  • quality
  • features
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  • handling
6 written ratings Read all reviews
Total
quality
features
sound
handling

Small amp, big sound, big list of features

Kerwin, 28.11.2017
I was looking for a small acoustic amp to have something to practice using my loop pedal at home, without being forced to set up my entire PA system. Plus, since some of the venues I play in don't have monitors, I was looking for something I could use as a monitor. Ideally, it would be a DI out for both the vocal and the guitar channel, giving the sound guy to have different mix for the room to the settings on the amp. Added bonus would be something portable.

In comes the Boss Acoustic Singer Live. This little amp basically ticked all those boxes, and comes with some added features as well, for a very decent price indeed. In addition to the things I was looking for, it packs a vocal harmonizer, a looper, and some nice effects.

The effects are as decent as you would expect from Boss. A very nice, lush reverb, which goes into silly levels if you turn it all the way up, but is very useful when used in moderation. The delays on the vocals and the chorus on the guitar are not really my thing, but certainly provide some interesting options.

The vocal harmonizer is a fun thing to play with. If you play standard chords, it works surprisingly well in detecting the major and minor thirds in the chord to determine if it needs to add a major or minor harmony. The downside for me is that I play in DADGAD and use a lot of suspended chords. On those, it tends to get confused and the result is... less than pleasing. Still, if you give its use some thought, you can really enrich your sound with it.

The looper is a basic one, one channel, no undo function. It is fun to practice with, but compared to my Boss RC-30 loop pedal, it is a bit lacking. Of course, it isn't a real fair comparison and a built-in looper is a nice thing to have. It basically gives me a third channel for loops in addition to my pedal, so more options!

The sound of the amp is just surprisingly good. I was afraid the small speaker would dissapoint me and that I should have opted for the pro version of this amp which has a bigger frame and speaker. But this little thing really amazed me with its rounded sound. There actually is a nice amount of low end in this thing. The acoustic resonance options add some different flavours, made to enhance the sound of piezo pickups, but even without it, my acoustic sounded great (and I am normally not that impressed with its piezo). Plenty of volume too for such a little thing.

All in all, this thing was a great buy, a lot of options but it really shines in the most important side of an amp: it sounds superb!
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Total
quality
features
sound
handling

Perfect device

Edi M., 06.08.2017
The amp is used in small appearances for amplifying Western and classical guitars as well as fetuses and vocals in the open air. In all areas, thanks to his equipment, he did an excellent job with a very convincing sound. The power or the volume is more than sufficient.
The settings on the guitar channel, in particular the acoustic resonance, allow a very fine tuning of the acoustic guitars. The loop is sufficient with 40 seconds for my purposes, the effects arrive noise-free.
The Harmony feature on the microphone channel is a very interesting thing that invites you to experiment. Used correctly, you get, as in my case, an additional flute part.
In the vocals, the effect is not so convincing, but is probably because that the right settings for the microphone has not yet been found. As I said, the device invites you to try.
The workmanship is impeccable, the knobs are optimal and not too smooth and the handle looks safe.
I could not find anything negative.
To operate the loop, I use the FS-5U footswitch from BOSS.
Absolute buy recommendation.
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