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Small silver metal box with XLR and 4.4mm headphone jacks on front panel

LORDWORLD

LORDWORLD U5PRO Headphone Amplifier XLR 4.4mm 1500mW 18-600Ω Replaceable Op-Amps

SKU CH-AZ8C-6RHFT

Fully balanced headphone amplifier delivers 1500mW into 32Ω, drives 18–600Ω loads, and offers swappable op-amp slots for XLR and 4.4mm headsets

  • Fully balanced circuit runs at ±14 V for transparent sound
  • 1500 mW at 32 Ω drives 18–600 Ω headphones
  • OP42 and BUF634 architecture yields low distortion and high detail
  • Swappable op-amp slots support OP17, AD797, AD843, AD847, OPA627
  • Compact portable build enhances XLR and 4.4 mm headphone audio

Balanced Headphone Amplifier

The LORDWORLD U5PRO is a fully balanced headphone amplifier built for listeners who want transparent sound from XLR and 4.4 mm connections. Its circuit operates at ±14V from a DC 5V input, delivering clean frequency response and transient dynamics. It suits audiophiles seeking portable, high-fidelity amplification.

Build Integration

The compact chassis fits easily on a desk or in a travel kit, requiring only a 5V DC source to reach its full ±14V internal rails. It drives loads from 18 to 600 impedance, reaching 1500mW at 32 load, so it pairs with sensitive IEMs and demanding full-size cans alike. No separate power supply is needed beyond the 5V input.

Replaceable Op-Amp Slots

The classic OP+BUF topology uses OP42 and BUF634 as standard, but sockets accept OP17, AD797, AD843, AD847, and OPA627 for tonal tailoring. Swapping op-amps changes gain character, soundstage width, and detail retrieval without soldering. Buyers who want fixed-gain simplicity or digital processing will not find those features here.

How it compares

Measured against everything we stock in Wi-Fi & Bluetooth Audio Devices, at today’s prices. Recalculated every night.

Price $192.99
Pricier than about 79% of the 297 comparable items (median $63.99).

Specifications

Product
Brand nameLORDWORLD

Questions about this item

At what load does the 1500mW output limit appear during extended listening?

The 1500mW rating is measured at a 32 load, so sustained high-volume use with lower-impedance headphones will hit that ceiling first.

How hot or noisy does the unit get when running all day?

The fully balanced circuit runs on ±14V rails from a DC 5V input with a pure analog OP+BUF design, so it produces minimal heat and no fan noise during continuous operation.

What source and headphone connections must I already have to use this amplifier?

You need a source with XLR or 4.4mm balanced outputs and headphones wired for XLR or 4.4mm balanced termination within the 18-600 range.

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