FlexRadio Power Genius XL
$$$$$
| Frequency | 1.8 - 54 MHz (160 through 6 m) |
| Bands | 160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m |
| TX power | 2000 W (Legal-limit class: up to 2000 W PEP on SSB and up to 1500 W on RTTY/FT8 (50% duty), at 100% ICAS duty across 1.8-54 MHz. Two NXP MRF1K50H LDMOS devices (each 1.5 kW) at 48 V.) |
| Modes | solid-state (LDMOS) legal-limit HF/6 m linear amplifier, networked and SO2R-capable |
| rf input | Two transceiver inputs (for SO2R), with ~70 dB isolation between them |
| rf output | Switched antenna outputs (1x3 antenna switching, or SO2R routing) |
| network | Built-in Ethernet (LAN) for plug-and-play integration and remote monitoring/automation; also an LCD touchscreen on the unit |
| ac in | AC mains (internal power supply) |
| power req | AC mains; power supply built in. Integrates over Ethernet with FLEX-6000/8000 radios (and works with any transceiver); LCD touchscreen control. |
A flagship, feature-rich amplifier: near-legal-limit clean LDMOS output at full ICAS duty (great for digital modes), genuine SO2R operation (two radios, one amp, 70 dB isolation), built-in antenna switching, and deep network integration with FLEX radios for remote and automated control. The MEffA envelope-tracking design improves efficiency, and the touchscreen and Ethernet make it modern and easy to monitor.
It is expensive (around $5,500-6,000) and aimed at serious contest/DX stations - overkill for casual use. As an LDMOS amp it needs a good antenna/SWR, its full feature set (networking, SO2R) is most valuable with a FLEX station, and it is a large, heavy desktop unit.
The FlexRadio Power Genius XL is a top-tier solid-state HF/6 m amplifier - up to 2000 W PEP at 100% ICAS, the only fully SO2R-capable amp, with built-in antenna switching, a touchscreen and deep Ethernet integration. It is the amplifier for a high-end contest/DX or FLEX-based station; casual operators are better served by a simpler, cheaper amp.
The FlexRadio Power Genius XL is a flagship solid-state amplifier for the HF bands and 6 meters, built to run at the legal limit. It uses a pair of NXP MRF1K50H LDMOS transistors - each individually rated at 1.5 kilowatts - operating at 48 volts, and it delivers up to 2000 watts PEP on SSB across 1.8 to 54 MHz, with the unusual distinction of being rated at 100% ICAS duty cycle. That continuous-duty headroom (and up to 1500 watts on RTTY and FT8) makes it well suited to demanding digital operation, where lesser amplifiers must be derated.
Two features set it apart. First, it is network-native: a built-in Ethernet port lets it integrate directly with FLEX-6000 and 8000 series radios and be monitored and automated remotely, and it also has an LCD touchscreen for local control (it works with any transceiver, not only FLEX radios). Second, it is the only fully SO2R-capable amplifier on the market - it accepts two transceiver inputs with about 70 dB of isolation between them, so a single-operator-two-radios contester can feed both radios into one amplifier. It also includes 1x3 antenna switching, and its MEffA (Maximum Efficiency Algorithm) varies the supply voltage to follow the RF envelope, improving efficiency and reducing heat.
The trade-offs are price and scope: at roughly $5,500-6,000 it is a serious investment aimed at high-end contest and DX stations, its networking and SO2R features shine most in a FLEX-based setup, and like all LDMOS amplifiers it wants a clean, well-matched antenna. It is a large, heavy desktop unit with its supply built in.
It pairs naturally with FlexRadio SDR transceivers like the FLEX-8400, and competes at the top of the market with amplifiers such as the Elecraft KPA1500; the smaller Palstar LA-1K serves those wanting 1 kW.