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Description
Key Digital KD-AMP220 Compact Digital Amplifier and Pre-AmplifierThe KD AMP220 is a 2x20 watt Class D amplifier with an 8 speaker output ideal for installation in presentation spaces. Input connections accommodate microphone, line level balanced unbalanced, and line level 3. 5mm stereo analog audio inputs. The output is a mix of audio from the microphone input and the selected audio input. Microphone and output volume levels may be variably controlled via IR, RS 232, or the front panel, and speaker level output may
The KD-AMP220 is a 2x20-watt Class-D amplifier with an 8 Ω speaker output ideal for installation in presentation spaces. Input connections accommodate microphone, line level balanced/unbalanced, and line level 3.5mm stereo analog audio inputs. The output is a mix of audio from the microphone input and the selected audio input. Microphone and output volume levels may be variably controlled via IR, RS-232, or the front panel, and speaker level output may be set to bridge stereo or mono mode.
Features
- Class D 2 Channel Amplification: 20W PER CHANNEL @ 4ohm, 40W @ 8ohm BRIDGED
- Mixing: Output is a mix of microphone and the selected audio input
- Signal Processing of variable volume level set for each input. Variable volume, bass, and treble for output
- Inputs: Microphone (3-pin balanced, condenser/dynamic), 6-pin balanced stereo, 3.5mm stereo
- Phantom Power: 48V phantom power for integration with condenser microphones
- Outputs: Pre-amp line level (6-pin balanced), speaker level
- Speaker Level Output: Bridge, stereo, or mono modes selectable
- Noise gate for consistent audio levels, prevention of ambient noise
Specifications
- Analog Inputs: One (1) 6-pin Phoenix Connector; One (1) 3.5mm TRS Connector
- Microphone Input: One (1) 3-pin Phoenix Connector
- Control (Front Panel): Push Button, Rotary Knob
- Control (Rear Panel): RS-232 via One (1) 3-pin Phoenix Connector; IR via One (1) 3.5mm TRS Connector
- Microphone 48V Phantom Power Mode Switch: One (1) 2-Position Slide Switch
- Output Signal Format Selector: One (1) 3-Position Slide Switch
- Balanced/Unbalanced Analog Audio Output: One (1) 6-pin Phoenix Connector
- Speaker Output: One (1) 4-pin/5 mm Phoenix Connector
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24V DC Power: One (1) Barrel (5.5 mm OD, 2.1 mm ID)
Audio Performance
- Input Impedance: >10k Ω
- Output Impedance: 50 Ω Analog Output; 4/8 Ω Speaker Output
- Maximum Rated Power Output: 40 Watts
- Frequency Response: 120 Hz to 20 kHz
- Common Mode Rejection Ratio (CMRR): >70 dB at 20 Hz to 20 kHz
- Signal to Noise Ratio (SNR): 80 dB (Max)
- Total Harmonic Distortion + Noise (THD+N)L: 1% at 1 kHz; 0.3% at 20 kHz at Nominal Leve
- Voltage Gain: 32 dB
Chassis and Environmental
- Enclosure: Painted Aluminum
- Dimensions (W x H x D): 8.661” x 1.299” x 4.094” (LxDxH)
- Net Weight: 1.153 Lb
- Operating Temperature: +32° to +104° F (0° to +40° C)
- Operating Humidity: 20% to 90%, Non-condensing
- Storage Temperature: +14° to +140° F (-10° to +60° C)
- Storage Humidity: 20% to 90%, Non-condensing
Power, ESD, and Regulatory
- Minimum Power Consumption: 5 watts
- Maximum Power Consumption: 45 watts
- Power Supply Input Voltage: 100-240v AC at 50/60 Hz at 0.5 A
- Power Supply Output Rating: 24V DC at 2.71 A
- ESD Protection: 15kV
- Device Regulatory: CE, FCC
- Power Supply Regulatory: CE, FCC
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
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.2 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 4
Toy provides much fun and hilarity, seam rips.
Size: 20 x 4 x 4 in, Pattern Name: Eggplant, Size: 20 x 4 x 4 in, Pattern Name: Eggplant
So, I kind of bought this on a whim. But our dogs absolutely love this toy, and it provides many moments of hilarity as watching our medium sized dogs tote this giant toy around, whipping it back and forth, hitting themselves with it, is constant entertainment. The squeaker is still working nearly 6 months later, which is amazing. I only took off one star because I have had to perform surgery on this toy multiple times due to the seam coming open, letting the stuffing out, which is a major issue. I have to take it away from them (which they hate) then find time to sew it up until the next spot opens up. If I was smart, I'd just have reinforced the entire seam the first time, but no one said I was smart.
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Reviewed in the United States on October 27, 2025
★★★★★ 5
He loves them
Size: 20 x 4 x 4 in, Pattern Name: Eggplant, Size: 20 x 4 x 4 in, Pattern Name: Eggplant
Our Dog absolutely loves this little toy. Have a stock pile because, like all dog toys, they need replacing.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Great dog toy
Size: One Size, Pattern Name: Corn
My dog loves this toy. It is sturdy and great squeaker.
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Reviewed in the United States on November 15, 2025
★★★★★ 3
Cute but red fur does chew off 😜
Size: 20 x 4 x 4 in, Pattern Name: Pepper
My dog loves this hot pepper. It's our 2nd but the red fur does come off so don't leave your pet unattended with it for an extended amount of time.
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Reviewed in the United States on February 10, 2026
★★★★★ 5
This worm, pretty sure it’s a worm and not a snake, can take a lot of abuse.
Size: X-Large (Pack of 1), Color: Blue Snake, Size: X-Large (Pack of 1), Color: Blue Snake
Snake, worm, whatever, my dog doesn’t care, she loves it all the same. My little friend can be kinda rough with her toys. This is no exception. The pictures are from roughly one month of giving it to her and include playing with it at least every other day or so. The top is holding up well, but the bottom has taken some damage, and two of the squeakers have long since been destroyed. Despite this, my dog still loves playing with it. We normally play tug of war together, but on her own she chews at it to get to the squeakers inside, which she promptly destroys, which I’m totally fine with, as quiet toys are much preferred, by me, not her. I believe there are 4 in the XL size that we got. We’ve had a few of these in the past. We tend to get about 6 months out of them. After she “lovingly” removes the squeakers, she doesn’t chew on it much, and we just use it for tug of war, but at that point she’s done enough damage to the underside that its time is limited. But, as it’s pretty low priced, for the time and enjoyment we do get out of it, it’s very much worth it. I do need to clarify, the durability is actually quite good, I don’t fault the product as at all, it’s just my dog is equally as good with destruction, but it should be noted this toy does last much longer than most of her victims. The color, (we got the blue and green) is also very vivid and nice, as is the texture. We’ll be purchasing again.
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Reviewed in the United States on September 23, 2024