The AC650 is an all-in-one 10-channel DSP, multi-way speaker manager, and amplifier, featuring 6x50W powered channels, 2 RCA outputs, and 2 Optical outputs. With the AC650, you can effortlessly build and fine-tune multi-way, multi-driver speaker systems, eliminating the need for passive crossovers. Each driver can be individually tuned and powered, making the AC650 the perfect solution for both proficient speaker builders and beginners alike.

Key features include:

  • WiFi control for fast and easy tuning of 2-way, 3-way, or more speaker systems, available anytime via WiFi through the Acoustas App
  • Daisy-chaining multiple AC650 units via Optical S/PDIF at 24bit/192kHz for expanded channel capacity
  • A/B testing of crossovers, equalizers, channel gain, channel inverting, time alignment, and more

The AC650 provides all the tools necessary to build and perfect high-performance speaker systems that truly amaze.

It is designed and assembled in the USA 🇺🇸 from the ground up by our incredible team.

Example Speaker Build Video

In this video Stas builds open baffle monitors with four 8 inch woofers and two mids/tweeters using the AC650.

Tuning Speakers with AC650

In this video you can see how to quickly measure, crossover and DSP tune each driver with the Acoustas App.

1-6 Powered Amplifier - 50W/CH

Control each channel via App

  • On/Off
  • Invert
  • Gain
  • Time Delay
  • Crossover
  • 15-Band Equalizer

Optical Out-2CH 24Bit/192 kHz

Control each channel via App

  • On/Off
  • Invert
  • Gain
  • Time Delay
  • Crossover
  • 15-Band Equalizer

Analog Out 2-CH RCA

Control each channel via App

  • On/Off
  • Invert
  • Gain
  • Time Delay
  • Crossover
  • 15-Band Equalizer

Audio Inputs

  • Bluetooth® AptX-HD
  • USB Audio 24bit/192kHz
  • Optical up to 24bit/192kHz
  • Coaxial up to 24bit/192kHz

AC650 Specifications

Inputs
  • Bluetooth® AptX-HD
  • USB Audio 24bit/192kHz
  • Optical (S/PDIF) up to 24bit/192kHz
  • Coaxial (S/PDIF) up to 24bit/192kHz
Outputs (10CH)
  • 1-6 Powered Outputs (50W/CH)
  • 7-8 Optical (S/PDIF) Outputs
  • 9-10 RCA Outputs
Acoustas App
  • iPhone, iPad, Android and Windows (coming soon)
  • Connect to all devices via WiFi
  • Control Volume, Source, Tone and Presets
  • DSP Tune up to 10 channels

Technical Specification

Download Full Technical Report (pdf)
THD+N

0.073505% @ 1kHz

Large SINAD

62.68dB @ 1kHz

Signal-to-Noise Ratio

100dB @ 36 Watts into 4 Ohms

Control

Remote control the AC650:

  • Main Volume
  • Source Select
  • Global Presets (all settings)
  • Tone Control
  • Left/Right/Center Gain
  • More coming soon

Tune

Tune every aspect of the 10 channels:

  • Select one or multiple channels to tune
  • Turn On/Off, select Left, Right or Center
  • Invert by 180 Degrees
  • Gain Control, Time Delay
  • Crossovers: Butterworth, Linkwitz-Riley, and Bessel 6-48dB/Octave
  • FIR Crossovers (coming soon)
  • 15-Band Equalizer with imports and exports
  • A/B everything in Presets

Devices

  • Add new devices via the WiFi network
  • See all available devices in one place
  • Power On/Off
  • Quick Volume control
  • Tap on any device to go into the Control Tab

Acoustas App

The Acoustas App connects via Wi-Fi to control and fine-tune both the overall sound and each individual channel. With its powerful Presets functionality, you can A/B test settings effortlessly, achieving fast, audible results. The app makes audio system tuning intuitive, rewarding, and — most importantly — 100% fun.

Scan to go to App store.

Scan to go to Play store.

Acoustas App on Mac App store.

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Designed and Assembled in USA

We design, assemble, and test each AC650 in Richmond, Virginia, USA. We stand by our quality and strive to provide the best possible acoustic experience and customer service.

FAQ

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Our customer support is available Monday to Friday: 8am-8:30pm.Average answer time: 24h