| USB
AUDIO INTERFACE |
On
Sale
|
USB
AUDIO INTERFACE from Purebits
NOTE:
currently our soundcards are NOT ON SALE
This
page is here for information only
USB
Audio interfaces (2 models) are now available from Purebits.
They have been designed and manufactured for acoustics measurements
and Live Recordings purposes, but are excellent also for other
applications.
X4 - General Description
X2 - General Description
X2 and X4 - Features comparison
X2 and X4 - Prices and ordering
options
SHIPPING
HOW TO ORDER
X4
Model
X4
manual (PDF file)
Download
zipped X4
manual
Technical
specifications:
2
channel IN / 2 channel OUT USB soundcard (16 bit, up
to 48 kHz sample rate (*)),
compatible with all Windows versions (no driver required),
Linux and Macintosh.
High accuracy A/D and D/A converters from Burr-Brown.
Burr-Brown PCM2906 codec specifications:
DAC: THD+N 0.005%, SNR 96 dB, Pass-Band Ripple +/- 0.1 dB
ADC: THD+N 0.01%, SNR 89 dB, Pass-Band Ripple +/- 0.05 dB
(*)
The
soundcard can operate also at a sample frequency of 96 kHz,
but the audio bandwidth is limited to 22 kHz.
No
external power supply required. Powered by the USB port.
Very
robust anodized aluminum enclosure.
Compact size: 103 x 53 x 120 mm
2
x 10 Led VU-Meter bar graphs, for accurate input level
adjustment.
Can
be used as Preamplifier for Microphone and line levels.
The Input and output stages are realized using state-of-the-art
Burr-Brown operational amplifiers.
Burr-Brown OPA2353 specifications:
THD+N 0.0006%, very low noise 5nV/sqrt(Hz), Rail to Rail
I/O
4
x inputs, RCA connectors, mixable with stereo input JACK
connector. Input 1 and 3 are downmixed to USB input Left. Input
2 and 4 are downmixed to USB input Right. Suitable for Live
recording, using 2 or 4 microphones, and for acoustic measurements.
Separate
switchable phantom power supply (3,6 V) for channels
1/2 and 3/4, optimized for Panasonic WM6x series electret microphonic
capsules.
Input
level adjustment realized with high accuracy Cermet potentiometers.
Separate knobs for inputs 1/3 and 2/4.
Separate
Preamplifier/Monitor JACK stereo output.
Suitable for driving line or headphone loads.
USB
soundcard stereo JACK/2 x RCA output.
Suitable for driving line or headphone loads.
Line/Microphone
input gain switch.
Digital
Input / output. Coaxial and Optical.
Manual
selector switch for Coaxial or Optical input (the digital input
signal can be recorded only through USB, it is not buffered
to monitor output).
FRONT
VIEW - BLACK
Click
to zoom image
REAR VIEW - BLACK
Click
to zoom image
FRONT
VIEW - NATURAL
Click
to zoom image
REAR VIEW - NATURAL
Click
to zoom image
X2
Model
X2 manual (PDF file)
Download
zipped X2
manual
Technical
specifications:
2
channel IN / 2 channel OUT USB soundcard (16 bit, up
to 48 kHz sample rate (*)),
compatible with all Windows versions (no driver required),
Linux and Macintosh.
High accuracy A/D and D/A converters from Burr-Brown:
Burr-Brown PCM2906 codec specifications:
DAC: THD+N 0.005%, SNR 96 dB, Pass-Band Ripple +/- 0.1 dB
ADC: THD+N 0.01%, SNR 89 dB, Pass-Band Ripple +/- 0.05 dB
(*)
The
soundcard can operate also at a sample frequency of 96 kHz,
but the audio bandwidth is limited to 22 kHz.
No
external power supply required. Powered by the USB port.
Very
robust anodized aluminum enclosure.
Pocket size: 54 x 23 x 80 mm
Stereo
JACK Input connector.
USB
soundcard stereo JACK output.
Suitable for driving line or headphone loads.
Phantom
power optimized for Panasonic WM6x series electret microphonic
capsules (3,6 V). Fixed input gain.
Input
and output stages realized using state-of-the-art Burr-Brown
operational amplifiers
Burr-Brown
OPA2353 specifications:
THD+N 0.0006%, very low noise 5nV/sqrt(Hz), Rail to Rail
I/O
FRONT
VIEW - BLACK
Click
to zoom image
FRONT VIEW - NATURAL
Click
to zoom image
X2,
X4 - Features comparison:
|
Feature
|
X2
|
X4
|
|
Microphone
pre-amplifier
|
NO
|
YES
(variable gain, 34
dB)
|
|
Pre-amplifier
input
channels
|
-
|
4
|
|
Phantom
power for electret capsules
(3,6 V)
|
YES
(always active)
|
YES
(can be turned OFF,
separate switches for
IN 1-2, IN 3-4)
|
|
Vu-Meter
|
NO
|
YES
2
LED Bars (10
elements)
|
|
Pre-amplifier
gain limiter switch
|
-
|
YES
(max gain: 14 dB)
|
|
Soundcard
input channels
|
2
|
2
|
|
Soundcard
output channels
|
2
|
2
|
|
Input
connectors
|
Soundcard
input:
1 Stereo Jack
|
Soundcard
input:
1 Stereo Jack (IN 1-2)
Pre-amplifier:
4 RCA (IN 1-2-3-4)
|
|
Output
connectors
|
Soundcard
output:
1 Stereo Jack
|
Soundcard
output:
1 Stereo Jack
2
RCA
Pre-amplifier:
1
Stereo Jack
|
|
Digital
input
Coaxial
|
NO
|
YES
|
|
Digital
input
Coaxial
|
NO
|
YES
|
|
Digital
output
Optical
|
NO
|
YES
|
|
Digital
output
Optical
|
NO
|
YES
|
SHIPPING
We
ship all items from Italy by international Express Courier.
More information about average delivery times of this service
can be found here
Expedition prices vary according to destination.
The shipping price can be computed online from this
page setting a 1 Kg weight parcel and your country.
Press "Esegui Calcolo" for the computation.
Insurance is optional (recommended).
The shipping cost for Italy is 7 EURO.
After shipping, we will send you by email a number for online
tracking of your shipment (for all countries where this service
is available).
If you prefere other shipping methods, such as Fedex, UPS, DHL,
please tell us.
ORDERING
Check
stock state:
Click here
NOTE:
currently our soundcards are NOT ON SALE
For
ordering, please fill out the following online form. The requested
data are used for computing the exact shipping cost.
We
will contact you in a short time sending all information about
the availability in stock of the selected item and a link for
online ordering (in a secure order page).
Fields
marked with * are required
If
you have problems with the above online form, please send an
email to usb@purebits.com
containing the required information.
We will contact you in a short time sending all information
about the availability in stock of the selected item and a link
for online ordering (in a secure order page).
Don't send by email credit card data!
From
Robert Thompson, USA:
It's
truly great! I have tried it out several times and each time
I'm blown away with how well it works, as well as the superb
recording it can make when coupled with inexpensive Panasonic
mic capsules!
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