Usb Asio Driver For Mac

What's USB, synchronous and asynchronous, implicit feedback, WDM and CoreAudio?

'Universal Serial Bus' (USB) is an external peripheral interface standard for data transmission. USB 1.1 and USB 2.0 'full speed' operate at 12Mbps and provides up to 8 uncompressed audio channels at 48kHz / 16bit.

USB2.0 'high speed' (480Mbps), USB3.0 'superspeed' (5Gbps), USB3.1 'superspeed+' (10Gbps) and USB3.2 (20Gbps) offer higher samplerates, bitrates, lower latency and more audio channels.

Jump to Compatibility and drivers - Update Mac drivers. Visit our driver index page and click on your device's manufacturer. Find and download the.

So called synchronous designs derive the samplerates from the USB clock. This increases the compatibility. e.g. it works with any smartphone etc. On the downside the audio samplerate contains more jitter, as there's on-purpose jitter on the USB clock from 'clock spreading' technologies.

Asynchronous designs use samplerates from crystals, external masterclocks or audio PLLs. If not in implicit mode, an additional USB feedback endpoint reports the rounded current samplerate, relative to the USB frame clock.

Implicit feedback means the driver uses the number of sample frames in the input stream's packets to construct the packets for output streams. No feedback endpoint is required and perfect syncronisation is ensured. This had always been the concept of Ploytec drivers.

Windows WDM 'Windows Driver Model' audio is a basic standard, even supported by Windows Mediaplayer.

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Mac OS X and iOS provide an advanced Audio and MIDI system called Core Audio, being part of the operating system. Many USB audio interfaces are 'class compliant', work out of the box on the Mac and don't need additional drivers.

Still, for interfaces needing a driver, Ploytec supplies a USB Audio HAL-plugin driver for Mac OS X.

low latency

Click here to download the driver for Windows XP/7/8/10 32bit

(August, 30th 2010, V2.8.45, 942KB)

Click here to download the driver for Windows XP/7/8/10 64bit

(August, 30th 2010, V2.8.45, 1093KB)

Click here to download the demo driver for Mac OS X 10.8-10.14

(October, 5th 2016, V3.3.11, 1845KB)

(For Mac OS X 10.13 / 10.14 see the support page. Mac OS X 10.15 no longer supports HAL plugins: Catalina Release Notes. We'll release a CoreAudio-only driver by early 2020.)

Click here to download the free driver for Mac OS 9.04 - 9.22

(July, 12th 2007, V2.09f8, 327KB)

(Downloading the free driver does not entitle for buying a crossgrade.)

ASIO is a trademark and software of Steinberg Media Technologies GmbH.

Please note that by downloading you agree to the following terms:

1. You may make copies of this driver solely for private backup purposes.

2. The software is provided 'as is' without warranty of any kind.

3. Ploytec GmbH can not be made liable for any damage resulting from the installation or use of this software.

4. It's strictly forbidden to give the personal unlock-key to other people, no matter under what circumstances (including your friends).

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