Palmer RIVER spree - Active stereo USB-C media DI box

USB-C to studio and stage.

Feed audio from a laptop, smartphone or tablet directly into a mixer, stagebox or PA system. The Palmer SPREE is an active stereo USB-C media DI box designed exactly for this application.

It converts USB-C audio into two balanced XLR signals for direct integration into professional audio setups. D/A conversion with up to 32-bit / 192 kHz ensures high-resolution signal conversion, while the galvanically isolated XLR outputs help prevent hum and unwanted interference. A switchable Mic / Line output level allows easy matching to different input stages, and the ground-lift switch provides additional noise control in demanding environments. A 6.3 mm TRS headphone output allows direct monitoring or can be used as an additional signal output. Status LEDs for SIGNAL, SYNC and POWER provide quick visual confirmation during setup and operation.

The SPREE can be powered either via USB-C or via the included external power supply. When the external power supply is used, USB-C power pass-through allows the connected device to be powered at the same time. This is particularly useful for setups with smartphones or tablets.

With its robust metal housing, the Palmer SPREE is ready for touring and stage use. Engineered in Germany.

Technical data:General

Type (active/passive):	Active
Included Accessories:	External power supply
Included Accessories:	Rubber feet
Included Accessories:	Tour label
Included Accessories:	USB-C to USB-C cable
Material:	Aluminium
Material:	Steel
Coating:	Powder coated
Isolated transformer:	Yes
Transformer Ratio:	1:1
Ground Lift:	Yes
On/Off switch:	No
Frequency response (±0.5 dB, rel. Avg):	20 - 20,000 Hz
Number of inputs:	1
Number of outputs:	2
Colour:	Black
Number of channels:	2

Inputs

Input signal type:	USB
Input connector types:	USB-C socket female

Outputs

Output signal type:	Balanced
Output signal type:	Headphone
Number of line outputs:	2
Line outputs connector type:	XLR 3-pole male
Number of Headphone outs:	1
Headphone out connector type:	6.3 mm Jack TRS female

Line output performance

Max. output level (	18 dBu:
Balanced output impedance (1 kHz):	600 Ω

Signal processing

Min. Signal-to-noise ratio (SNR):	112 dB
Max. THD+N (1 kHz, +4 dBu, unity, unweighted):	0.015 %
Max. THD+N (30 Hz, +4 dBu, unity, unweighted):	0.015 %
Max. IMD (SMPTE, 60 Hz, 4:1, +4 dBu):	0.001 %

Mains operation

Operation voltage:	18 V DC (external power supply)
Operation voltage:	USB bus powered (5 V DC / 1 A)
Rated power:	5 W

Battery operation

Built in battery tester:

No

Housing

Cabinet material:	Aluminium
Cabinet material:	Steel
Coating:	Powder coated
Colour:	Black

Environmental

Ambient temperature:	-10 - 70 °C
Maximum air humidity (non-condensing):	80 %

Dimensions & weight

Width:	140 mm
Height:	50 mm
Depth:	128 mm
Weight:	575 g