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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
2 In and 2 Out Switcher Volume Controller, RCA signal switches to XLR balanced signal and no need for power supply. It provides RCA and XLR interfaces, independent L/R channel volume adjustment, which is suitable for devices with volume adjustment needProduct function introduction A977 passive preamp active speaker volume dual channel controller is small in size and suitable for active speakers or preamp post amp, it supports full balance or input and output of single ended signal. The product has functions of independent L R channel volume adjustment, 2 signals input and 2 signals output. It provides balanced XLR and unbalanced RCA connectors which are automatically converted to each other, with a
Product function introductionA977 passive preamp active speaker volume dual-channel controller is small in size and suitable for active speakers or preamp/post-amp,
it supports full-balance or input and output of single-ended signal.
The product has functions of independent L/R channel volume adjustment,
2 signals input and 2 signals output. It provides balanced XLR and unbalanced RCA connectors which are automatically converted to each other,
with a selector switch facilitates the signal switch of input/output.
Small size, big intelligence. The product is of small size, but has well-function connecters.
It is suitable for decoders and speakers without volume adjustment.
the product has the design of balanced input/output and RCA input/output architecture,
with switching function. The operation of the product will not cause loss of signal source.
Generally, the audio signal released from the decoder is the original sound source signal.
Great dynamics will not cause loss of sound quality, retaining the complete original signal source.
Product parameters
Input/output impedance: 10KΩ - 50KΩ
2 in 2 out switchover, unbalanced RCA connector and balanced XRL connector for input/output
Input: unbalanced RCA connector / balanced XLR connector (convert selection)
Output: unbalanced RCA connector / balanced XLR connector (convert selection)
Product net weight: 0.32 kg
Product package weight: 0.42 kg
Product dimensions: length 145mm X width 65mm X height 43mm
Packaging dimensions: length 200mm X width 180mm X height 55mm
Kit list
1 X A977 2 In and 3 Out Switcher Full-balance Passive Preamp Active Speaker Double Sound Source Volume Controller
Specification:
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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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]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Perfect Kit For Cold Brew Coffee or Teas
Size: 32 Ounces, Color: Gray
I make coffee many different ways and have been doing cold brew in a regular mason jar without a filter. I just got this set up and am very pleased. The kit comes with a thick glass mason jar of good quality, a filter basket and a lid that fits on top of a wide mouth mason jar. The lid has a sturdy handle attached to it and a secure pour spout with its own snap tight cover.
This is a perfect set up for cold brewing coffee. I filled the jar with water and secured the lid. I shook it up and turned it upside down and there were no leaks so it will be safe from accidental tip overs.
If you are looking for an easy way to make cold brew coffee then I strongly recommend this simple set up. It is shaped just like a regular Mason jar with a pour spout lid so it can fit almost anywhere a Mason jar will fit.
This also looks to be good for making small batches of sun tea with loose leaf tea.
Enjoy!
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Great hot or cold Brewer I ❤️🙏✝️
Size: 64 Ounces, Color: Gray
This works great for either cold or hot coffee or tea. Mine has had a workout since the day I received it. Easy to use and clean. Give me a a few weeks to check on the durability.
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Reviewed in the United States on April 8, 2026
★★★★★ 4
So close to perfect.
Size: 64 Ounces, Color: Orange
I'm enjoying the hell outa this. On my third batch in a week. No, you don't really need one to make cold brew. You could probably scrounge up everything you need in a reasonably well-stocked kitchen. But it really makes things so much easier. And it cleans up nicely. I might even buy another (I drink a lot of ice coffee in the summer). The ONLY drawback is the cheap, plastic screw-on lid. I don't trust it. I'd pay $10 bucks more for a metal lid. So, we'll take one star back.
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Reviewed in the United States on February 14, 2026
★★★★★ 5
Excellent Product
Size: 64 Ounces, Color: Gray
Absolutely love this item! It was securely packaged and arrived beautifully. It is super easy to use, very sturdy, has no issues leaking, a slim and sleek shape that fits perfectly in my fridge shelf, the solid glass jar and thick, durable plastic makes this item absolutely perfect.
10/10 recommend
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Reviewed in the United States on April 25, 2026
★★★★★ 5
Great cold brew at home save yourself some money get it now
Size: 64 Ounces, Color: 2Pack-Gray
This is a great way to make cold brew at home. I love the look, and size fits in the fridge perfectly. The system could not be any easier to use put coffee in, and put it in the fridge. The glass seems to be normal mason jar thickness and the handle is nice and sturdy. Very nicely made for the price.
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Reviewed in the United States on May 15, 2026