P-750u - Headphone amplifier LUXMAN - Free user manual and instructions
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| Product Type | Headphone Amplifier |
| Brand | Luxman |
| Model | P-750u |
| Dimensions (W x H x D) | 440 mm x 100 mm x 400 mm |
| Weight | 18 kg |
| Power Supply | AC 100-240V, 50/60 Hz |
| Power Consumption | 200 W |
| Output Power | 4 W + 4 W (32 ohms) |
| Frequency Response | 20 Hz - 100 kHz (+0/-0.5 dB) |
| Input Impedance | 33 kohms (XLR), 47 kohms (RCA) |
| Total Harmonic Distortion | 0.005% (1 kHz, 1 W) |
| Signal-to-Noise Ratio | 118 dB (IHF-A) |
| Gain Settings | Low, Mid, High (via front panel switch) |
| Inputs | 1x XLR balanced, 1x RCA single-ended |
| Outputs | 1x XLR 4-pin balanced, 1x 6.3mm single-ended |
| Amplifier Class | Class A (pure A operation) |
| Construction | Dual mono, mirror-imaged layout |
| Cooling | Natural convection (no fan) |
| Accessories Included | Power cable, dust cover, manual |
| Maintenance | Wipe with dry cloth; avoid solvents |
| Safety | Do not expose to moisture; ensure ventilation |
| Spare Parts / Repairability | Authorized service centers; user-replaceable fuses only |
Frequently Asked Questions - P-750u LUXMAN
How do I connect balanced headphones to the P-750u?
Use the 4-pin XLR output on the front panel. Ensure your headphones have a compatible 4-pin XLR cable. Set the gain switch to an appropriate level.
What is the recommended gain setting for high-impedance headphones?
For headphones with impedance above 250 ohms, use the 'High' gain setting. For medium impedance (50-250 ohms), 'Mid' is suitable. For low impedance (<50 ohms), use 'Low' to minimize noise.
Can I use the RCA and XLR inputs simultaneously?
No, the P-750u does not mix inputs. You must select either the XLR or RCA input via the input selector switch on the rear panel. Only one input can be active at a time.
Is the P-750u compatible with IEMs?
Yes, but use the 'Low' gain setting to avoid excessive volume and potential hearing damage. The amplifier has very low noise floor suitable for sensitive IEMs.
How do I clean the P-750u?
Unplug the unit. Use a soft, dry microfiber cloth to gently wipe the chassis. Do not use any liquids, sprays, or abrasive cleaners.
What is the power consumption in standby mode?
The P-750u consumes approximately 0.5 W in standby mode. It can be left plugged in, but to save energy, turn off the main power switch if not used for extended periods.
Does the P-750u support dual-mono operation?
Yes, the amplifier features a dual-mono design with separate power supplies for each channel, ensuring excellent channel separation and imaging.
Can I stack other components on top of the P-750u?
It is not recommended as the amplifier relies on natural convection for cooling. Allow at least 5 cm clearance on top and sides for ventilation.
What is the warranty period for the P-750u?
Luxman typically offers a 2-year warranty from the date of purchase. Check with your authorized dealer for exact terms in your region.
How do I switch between inputs?
Use the input selector switch on the rear panel: position 'BAL' for balanced XLR input, 'UNBAL' for single-ended RCA input. The selected input is indicated by the front panel LEDs.
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USER MANUAL P-750u LUXMAN
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Product information
Brand : LUXMAN
Model : P-750u
Category : Headphone amplifier