Best Passive Isolation Headphones

Palmer River Wupper Single-channel Passive Line Isolation Box

Product Code: ga149594
Availability: In Stock

$359.97 $453.56

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Developed for guitar and bass application but also great for keyboards and hi-fi equipment, the Palmer RIVER wupper is a single-channel, line-isolation box used to eliminate ground-loop hum and interfering signals when connected between two devices. RIVER wupper is equipped with a 1/4" connector on the input side and a 1/4" connector on the output side. Both the input and output can either be balanced or unbalanced.

RIVER wupper features a simple and failure-proof passive design that requires no battery. It utilizes galvanic-isolation technology via its transformer to preserve the sound quality of your audio channel.

Engineered in Germany and built to last, the unit is virtually indestructible thanks to its rugged, aluminum-and-steel casing and reinforced connectors.

For Guitar/Bass/Keyboard, Hi-Fi Passive Design Galvanic Transformer Isolation 1/4" Balanced / Unbalanced Input 1/4" Balanced / Unbalanced Output Rugged Metal Chassis

General
Type	Passive Line Isolator
Transformer Ratio	1:1
Maximum Input Level	+10 dBu (<1% THD, 20 Hz) +32 dBu (<1% THD, 1 kHz)
Frequency Response	20 Hz to 20 kHz, (±2 dB, Relative 1 kHz)
Impedance	Input: 17 Kilohms Output: 500 Ohms
THD	<0.09% (30 Hz, +4 dBu, Unity, Unweighted) <0.002% (1 kHz, +4 dBu, Unity, Unweighted)
Inputs / Outputs
Connector 1	1x 1/4" Female
Connector 2	1x 1/4" Female
Input	Balanced / Unbalanced
Output	Balanced / Unbalanced
Environmental
Operating Temperature	-4 to 158°F / -20 to 70°C
Operating Humidity	80%
Physical
Color	Black
Material of Construction	Aluminum, Steel
Dimensions	4.3 x 2 x 2" / 110 x 50 x 50 mm
Weight	10.6 oz / 0.3 kg
Packaging Info
Package Weight	0.78 lb
Box Dimensions (LxWxH)	5.4 x 3.9 x 3"

Line isolation for guitar/bass/keyboard. Also suitable for Hi-Fis and car stereos
Single channel: 1/4" instrument-/line-level input and 1/4" line-level output
Reliably eliminates ground-loop hum and interfering signals
Galvanic transformer isolation
Can be used to balance signals
Pure and unaltered sound
Passive operation: simple and failure-proof
Distortion-free up to +6 dBu
Solid casing made of aluminum and steel
Includes rewritable tour label for attachment onto the back of the wupper
Engineered in Germany

Related Questions and Answers

Q: 1. Is this flag compatible with other company matte boxes? Bright tangerine?

A: Not that we are aware of. This flag is only for the Tilta MB-T05.

Q: 2. Does this work with a down firing sub woofer?

A: This is designed for forward firing speakers, not really for downward. I would look more into a thin sheet of Neoprene or rubber for under the sub.

Q: 3. Will this work with Deity D3 Mic?

A: I'm trying to connect the Deity D3 Mic to the SR-AX100 to the Canon 80D. But doesn't work. What am I doing wrong.

Q: 4. Does this provide phantom power to mics that require it?

A: 'No' ... it is strictly a passive unit!

Q: 5. Can I connect 3 mono inputs to mix them to the output?

A: No, this adapter can handle either two mono mics, or one stereo mic.

Q: 6. Can I use it to connect a mixer board to my dslr?

A: No. You would require something with line inputs instead of mic inputs like the Kopul CMX-2-V2. https://www.bhphotovideo.com/c/product/1332706-REG/kopul_cmx_2_v2_two_channel_passive_camcorder.html

Q: 7. Could this work with a UA SC-1? Width for SC-1 is 2.4" & this says max is 2.3". Is the bottom piece foam? Could I modify it?

A: Yes, the Universal Audio SC-1 Standard Condenser Microphone is compatible for use with the Auray ISO-ARMOR-2 Microphone Isolation Chamber. The chamber will hold microphones with a diameter of up to 2.3" and the SC-1 has a 2" diameter. The bottom piece is made of foam.

Q: 8. The Kopul version of this had a cold shoe mount that was terrible adn would disassemble in the field when the screw fell out of the bottom from too much stress of mounting receivers on it. Does this product suffer the same problem?

A: I worked with Saramonic for 2-years and that whole time, I have not seen any defects of this product, or heard of an issue like you describe. I also have 2 in my possession for those 2-years and had no issue. My best suggestion is to try the item for yourself and if it's not up to your standards, return it for a refund or another product. We also offer a one-year warranty for full replacement if there's any problem. I think you're going to be happy with the product.

Q: 9. Purpose to record sound comes out from mixer and goes into DSLR or mobile phone with best balanced audio.Is Saramonic AX1 ok?

A: The Saramonic AX1 Passive 2-Channel Audio Mixer has independent volume controls for the left and right channels that allow you to achieve the proper balance for your recording with either mono or stereo output. The mixer can be used for cameras, smartphones, tablets, computers, or just about any audio application where you need to record the two input signals to one input and either separate the two channels for a stereo signal or mix them together for a dual mono signal.

Q: 10. Are these dividers for DSLR core units or for the mirrorless core unit? Or Does it not matter and the fit both?

A: The size of these are meant for the DSLR core units. They would stick up too far sadly for the mirrorless units.

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