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Description
GS-CU008/A - Single Comms Box with 1 x Talkback 4 WiresThe GS CU008A is a popular general purpose mic and headphone interface. It's flexibility has resulted in various custom designs with multiple mic inputs, or multiple monitoring inputs. These options can interface with wireless systems, or be used for audio description. Inputs The front panel input is transformer balanced at microphone level with a selectable 48v phantom power switch. A small pot is on the front panel for adjusting gain control, and
The GS-CU008A is a popular general purpose mic and headphone interface. It's flexibility has resulted in various custom designs with multiple mic inputs, or multiple monitoring inputs. These options can interface with wireless systems, or be used for audio description.Inputs
The front panel input is transformer balanced at microphone level with a selectable 48v phantom power switch. A small pot is on the front panel for adjusting gain control, and the mic on/off switch can also be set to act as a cough switch. For optimising the voice input, a band pass filter is used.
Outputs/Talkback
The standard unit features a single transformer balanced programme output. The output level is configurable by a three position selector switch which would typically be used with the compressor / limiter active above 0dB. The limiter can also be turned off for a 0dB output. If the compressor / limiter is not required, but more headroom is, the user can select a -10dB output without compressor/limiter. There is a single talkback circuit with top panel push button ans rear panel XLR output. Talkback button feature Config+ and can be configured as either lazy or momentary.
Monitoring
There are two audio inputs with a variable pot for headphone monitoring for a single commentator, with a control for adjusting sidetone level in the headphones. All pots have left/both/right headphone switching so to adjust any input to either side of the headphones. The operator has a single 6.35mm headphone socket. There is a 7 segment LED PPM meter.
Power
Internal switch mode power supply 90-240v AC. An external power input is also provided on a 4 pin XLR 10-18v DC.
• Single mic input with selectable 48v phantom power
• Band pass filter optimised for voice
• Transformer balanced inputs and outputs
• Output level feature limiter on/off, or extra headroom mode
• Single talkback circuit
• Talkback circuit features Config+
• LED PPM meter with 7 segments
• Commentator's headphone output on 6.35mm jack socket (A or B gauge)
• Headphone inputs have level control and left/right/both switching
• Commentator side tone level control
• Size: 158 x 92 x 222 mm (w x h x d)
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- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.4 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Easy to use
Size: 58.3mm, Color: Black
Great for make good coffee and easy to use.
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Reviewed in the United States on October 24, 2025
★★★★★ 5
Take the guess work out of the flow!
Size: 58.3mm, Color: Black
I got this because when my wife makes espresso, it's watery. When i make it, it's fine. We needed a controlled Tampering method so we both do the same job.
This is heavy, and being able to use the whole hand instead of fingers, not much effort is needed.
Since we purchased this, we were able to make consistent espresso shots for sure.
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Reviewed in the United States on July 12, 2024
★★★★★ 3
Not as good as I expected
When it first came, the box fell apart as I was taking it out, and a lot of some kind of dirt or sand kept falling out all over my table and floor. I had the take the entire thing apart and thoroughly wash it.
After drying age reassembling it, I tried it on my portafilter that came with my Breville Barista Express, but, somehow, it doesn't always make the tamping level. You would think with the ridge that rests on the side of the portafilter that it would force it to remain level, but, somehow, it doesn't, at least not consistently. It also has varying lengths (heights, or depths), and a single spring tension, so you may still over tamping or under-tamp. I was expecting it would have a censor that would just detect once it reached 30 lbs of force and cut off after that, similar to a torque screwdriver, but that's not what this is.
I'll still give it 3 stars because, despite the problems mentioned above, it at least produces some amount of consistency, even if that isn't measurable; but, I can't give it 5 stars because of those issues mentioned above.
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Reviewed in the United States on January 7, 2025
★★★★★ 5
This is the one.
Size: 58.3mm, Color: Black
As an el Supremo Coffee Geek, I've wasted money on lots of different tampers. Save your money and buy this one or it's equivalent. This thing is heavy duty, solid, well-made, self-leveling, tamps at 30 pounds and is fool-proof even for fools. Also, it's a palm tamper meaning more fun and more satisfying to use as you prep the puck for your morning buzz. Buy it. You will thank me.
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Reviewed in the United States on March 30, 2024
★★★★★ 5
Super easy to use and takes the guess-work out of getting even pressure on the grounds
Size: 58.3mm, Color: Black, Size: 58.3mm, Color: Black
I have been using a hand tamper for many years and have a good idea of the pressure I am applying to the grounds in the portafilter. I honestly considered spring tampers to be a bit silly. But this tamper really does take the guess-work out of pressing the coffee grounds. The shroud helps guide the press so that pressure is applied even and flat across the surface. With the manual tamper, there will be some play when pressing, or some unevenness in pressure. This is especially true when cranking out many espressos during a breakfast party with friends. Having the spring tamper makes quick work of turning out a lot of coffees with consistency.
There are no instructions for taking this tamper apart to clean inside, and you may not really need to do that very often. After each use, just pull back the shroud (the black piece that moves up and down) and wipe off the tamper (the shiny steel part). This will help prevent grounds from working their way inside. If you do want to take it apart, it’s easy. Pull back the shroud and unscrew the tamper. It will come apart into three pieces. Wipe the pieces off and reassemble. Super quick and easy.
This tamper is very heavy. My scale shows 656 g (about a pound and a half). It fits the portafilter exactly, with no slop. Just place on top of grounds and press!. Don’t even worry about pressure, just push down all the way. Overall I had fun using this tamper versus my manual one. And since I make myself a cappuccino very early in the morning, I don’t have to be very awake to get a good pack on the grounds and get my coffee fast!
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Reviewed in the United States on January 10, 2024
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