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Extended holiday returns
FREE refund/replacement until Jan 31, 2027 Learn more
FREE refund/replacement until Jan 31, 2027 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
In Stock.
Arrives
Monday, Nov 16
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At a glance
- Condition
- New
- Minimum Supply Voltage
- 12 V DC
- Output Power
- 125 watts
- In the box
- 1 x Xiegu XPA125B
- Warranty
- 33 month warranty
Features 5
- Built-in Automatic Antenna Tuner: The automatic antenna tuner and power amplifier unit of XPA125B can be used independently of each other as either an automatic antenna tuner or a separate power amplifier. The tuner handles 14-500 ohm loads in the HF bands and 6-meter band.
- 100W Power Output: The XPA-125B is the perfect amplifier for QRP radios or SDR transceivers with low power consumption (like a 5-watt transmitter) when 100-watt output is needed. Its maximum power output is 125 watts.
- Safty & Protection: The XPA125B has a variety of intelligent protection circuits to ensure the safety of the amplifier and connected transceiver. When abnormal operating conditions appear like SWR is too high, too much drive power, or too high temperature, the amplifier enters bypass mode and displays an alarm message.
- New Enhanced Version: After improving its shape and size from XPA125, it is smaller than the old version and can be worn on a bracelet like a small bag.
- Large Screen Display: The 2.7 inch large backlit LCD display shows input/output power, SWR, Voltage, Current, Temperature, amplifier status as well as warning messages making the operation of this modern amplifier simple and also user friendly.
Description
The Xiegu XPA125B (new version) is a 100-125 watt solid-state linear power amplifier for HF frequencies, with an integrated antenna tuner and a big and bright display for monitoring the amplifier status. It is equipped with protections: temperature, overcurrent, detection of input and output. It's perfect for your QRP radio or low power SDR transceiver. The automatic antenna tuner and power amplifier unit of XPA125B can be used independently of each other as either an automatic antenna tuner or a separate power amplifier. The tuner handles 14-500 ohm loads in the HF bands. It shows input/output power, SWR, Voltage, Current, Temperature, amplifier status as well as warning messages making the operation of this modern amplifier simple and also user friendly. After improving its shape and size from XPA125, it is smaller than the old version and can be worn on a bracelet like a small bag. 1 x Xiegu XPA125B 100W Linear Power Amplifier 1 x Control Cable for Xiegu Transceivers 1 x DC Power Cable 1 x USB Cable for PC Connection 1 x User Manual
Specs 11
| Manufacturer | Xiegu |
|---|---|
| Minimum Supply Voltage | 12 V DC |
| Brand | Xiegu |
| Number of Channels | 1 |
| Output Power | 125 watts |
| Maximum Output Power | 125 watts |
| Model | 9 |
| Brand Name | Xiegu |
| Number of Items | 1 |
| Unit Count | 1 Count |
| Item Highlight | Large Display for Home Stations, POTA, Field Day, Portable HF Radio Operation |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Nov 16
Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
It works as it should. Great value AMP/ATU allinone
Once I learned how to properly use this amp with my xiegux6200 I was amazed on how well paired together as an amp and antenna tuner. So the #1 rule with ATU's is that they are the first thing connected to the antenna (well assuming you don't need an swr meter...) and the radio goes afterwards. So when I learned that tuning is NOT done with the x6200 atu button, it's actually done on the xpa126 atu. Some other companies have them truly synced via the ACC port, but this one only needs you to tune it with about 5watts then it works with ease. I TX sound quality is good, it's built for portable use with a strap handle and quick-disconnect Anderson power poles. Since it takes only .5 watts of drive, it's versatile enough for use with other QRP radios. I recommend this amp.
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Reviewed in the United States on July 16, 2026 by Jonny B
Dependable Linear… ATU LACKING.
ATU NEEDS redesign. Linear works great! Very small of input wattage provides great output wattage. 1 watt in provides 50 watts output.
Reviewed in the United States on November 9, 2025 by Over the hill
XPA125B with IC-705 Radio, Works Great!
Great Amp for the price. Antenna tuner works great if properly configured (refer to attached photo for tuning instructions). I am using it with my IC-705 and can get about 100W output with about 1W drive. Based on comments from others, the drive level may vary to get full output, but it seems to always give full output with 5W or less drive. I wanted to use this amplifier for POTA and ARRL Field Day use. I don't like to move my base radio, so I grab the IC-705 and XPA125B for all my outdoor or field day work! For POTA, it was always frustrating when someone could not hear me with 5W output. With the XPA125B, I always seem to make reliable contacts. As mentioned in prior reviews, the XPA125B will not automatically switch bands, you must remember to manually switch the band on the amp by pressing the "BAND" button. This is more of an inconvenience and not a problem for me. Typically, I am not "band jumping" anyway. Once I get my antenna up and tuned, I will typically remain on that band for my outing. I researched several other amplifiers in the 100W range before buying the XPA125B. Most other amplifiers did not have an ATU and if they did, the cost was much higher. Please refer to the attached photo of the ATU tuning instructions I created. The XPA125B tuner has worked great for me, but you must follow the tuning instructions to get everything tuned properly (the manual does not cover this very well).
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Reviewed in the United States on October 30, 2025 by Rick
Something should have been said to Xiegu Company
Still waiting for the cable to hook up to the Xiegu X6200 that wasn't included in the XPA 125B Amplifier :( If they were not going to include it in the Amp box, then they should have included in the X6200 radio box! Either way nothing was said that the cable to hook the amp is a waiting game now poor QA control :(
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Reviewed in the United States on February 11, 2026 by Jim M.
The amp is made very well.
This is real a super high quality amplifier. I bought it to mate it with the Zeigu x6100 transever. It works really well.
Reviewed in the United States on August 6, 2026 by Rockin Rog
Power out is fine
I found the tuner fairly ineffective as have most reviewers. I have an MFG AT 100 that I have used for years and it works fine. The power output is good on all bands. Unfortunately, my band switch on the amplifier does not work terribly well. You have to push it three or four times to get it to cycle through the bands. I suppose I could swap it, but it’s not that big of a deal so I’ll just use it. I’m using it with an icon 705 and an appropriate cable that I got through Amazon. I’ve used it a fair bit into a homebrew end fed mounted in the attic and it reliably gives me 2 S-units above the usual IC 705 output. I drive it with only 1 – 2.5 W and it does fine.
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Reviewed in the United States on May 9, 2025 by Ken G
Awesome lil low drive amp!
Can hit this guy with .2-.5w and see 80-85w pep out! So 2-3w or that 5w qrp rig will excite this guy to full power. If swr is ideal and tuner is at a minimal reflect, also depending on band of operation, an easy 100w+ is obtainable with this unit! Up to 125w pep shown on display and is accurate with swr, band, tuner, amp, voltage. Input swr and output swr with watts simultaneously displayed! Great tuner with what we believe is a 10:1 capacity! Not many do this! Works on 160m fine. 43ft worked great but only needs the 4:1 to work. Value for money and functionality! Just an awesome lil amp! One thing I’d add is that silent but turbo muffin fan or two!!! ;) cheers 73 w8rbj
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Reviewed in the United States on September 23, 2024 by Gerald S.
Good when I was finally able to find a consistent tuning process.
Check out the YouTube video from TRX Lab entitled "#270 QRP PA Xiegu XPA-125B, defect ATU?" There he describes a method to consistently allow the amplifier's built-in tuner to tune the attached antenna. Bear in my that my barefoot Xiegu G90 never had a tuning problem with the same antenna, but the XPA125B complained of high SWR on all HF bands. When the steps in this video are followed, it results in a consistent tuning procedure on every 10-160m band! Here are the basic steps. 1. Turn the PA function off and the Auto ATU on. 2. Change the radio's modulation to AM or FM (CW apparently cannot key from its mic PTT). 3. Increase the radio's power level to 5W. 4. Key the radio and simultaneously press and hold the ATU button for 2 secs to perform an autotune. Note a final acceptable SWR value. 5. Decrease the radio's RF output power to 1W and turn on the PA function on the amplifier. 6. Rekey the radio now in AM or FM and observe the PA output of 80-100W (depending on the band). 7. Return the radio's modulation to your normal operating modulation scheme. Too bad the manual is horrible. The steps to tune are convoluted. Maybe Radioditty can rewrite the manual like they did with the G90 to actually make sense. This would probably prevent a lot of unnecessary returns of what is probably the best HF 100W amp/ATU value on the market!
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Reviewed in the United States on April 2, 2024 by Michael L.