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Xiegu

Xiegu XPA125B 100W HF Power Amplifier with Automatic Antenna Tuner

  • Based on 50 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Sep 22
Order within 20 hours and 47 minutes
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Features

  • 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

Manufacturer: Xiegu


Brand: Xiegu


Number of Channels: 1


Output Power: 125 watts


Number of Items: 1


Number of Channels: 1


Output Power: 125 watts


Maximum Output Power: 125 watts


Manufacturer: Xiegu


Model: 9


Brand Name: Xiegu


Number of Items: 1


Warranty Description: 33 month warranty


Unit Count: 1 Count


Item Highlight: Large Display for Home Stations, POTA, Field Day, Portable HF Radio Operation


Included Components: 1 x Xiegu XPA125B


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Sep 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • XPA125B with IC-705 Radio, Works Great!
Review Image by Rick Rick
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). ... show more
Reviewed in the United States on October 30, 2025 by Rick Rick
    • 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
    • Works great!!
This little guy kicks butt. Money well spent.
Reviewed in the United States on February 11, 2026 by Rich
    • 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 :( ... show more
Reviewed in the United States on February 11, 2026 by Jim M.
    • Xiegu XPA 125B the little amp that could
The Xiegu amplifier XPA125B is a marvelous unit that works great. Since buying it I've operated the amp on all bands but 6 meters. Excited by my G 90 and HL-2 transceiver. With about 1.5 Watts of drive the amp produces around 115 Watts out. I'm very happy with the unit. The fact it has a very robust antenna tuner is great as well. Before I bought the Xiegu amp I had tried several cheap no name amps that either failed after a short time or never worked from day one. Don't waste your money on the Noname brands get the Xiegu you will be happy you did. ... show more
Reviewed in the United States on October 25, 2025 by Kindle Customer
    • Disappointed going back to seller
Not the easiest to use. VERY sensitive to SWR and non consistent output. I have to set the power out to the amplifier to 5+ watts to get it to tune with the PA off. Then reduce power to 0.5 watts or less to stay under the 109 watt output it it shuts down. THEN the SWR changes and it shuts down to 2.0 SWR limit. I have tried many things and can’t get it to work without a bunch of fiddling. Won’t tune 24 MHZ at all on a 130 foot 9:1 random wire. Tuners in the x6100 and X6200 work first time every time on any band I choose with this antenna. Not impressed. 0.5 watts of drive give me 50 watts out give or take. If I raise the drive to 1 watt it either goes into power limit or SWR shutdown. I’m done. Going back to momma. ... show more
Reviewed in the United States on April 18, 2025 by Amazon Customer
    • Good for the money. Requires special cable to work.
I am updating my review as I was expecting this amp to work like amps I have used in the past. Instead of an internal relay sensing the RF and switching the amp to transmit, it needs a special cable to connect to the radio. This needs to be purchased separately and you need the right one for your radio. This information in the description would have saved me a lot of trouble. The advantage of the cable is automatic band switching. The amp does have a good wide bandwidth. Testing it with a dummy load and an unlocked xiegu 6100 it achieved between 80 to 100 watts from 1.6 Mhz to 30 Mhz. Did not test it on 50. The antenna tuner gave me great results with the xiegu vg4 antenna allowing me to use 80 meters. I could hear myself on an sdr located 400 miles away. 160 Meters was not achieved with the antenna but it's no big deal. ... show more
Reviewed in the United States on December 19, 2024 by mr s w cuthbert
    • Base station power for my IC-705
Review Image by Jeff ashmann Jeff ashmann
Review Image by Jeff ashmann Jeff ashmann
I have used this for almost a year, to turn my ICOM 705 into a mobile base station. Besides not doing auto band switching, the amp has worked great! It’s amazing how easy it is to punch thru pile ups with 100w of fairly clean power. Tuner works great too! Great value for the money.
Reviewed in the United States on August 17, 2025 by Jeff ashmann Jeff ashmann

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