SRM-500T - Headphones Stax - Free user manual and instructions
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| Product Type | Electrostatic Headphone Amplifier (Energizer) |
| Brand | Stax |
| Model | SRM-500T |
| Compatible Headphones | Stax electrostatic earspeakers (5-pin connector) |
| Input | RCA (Line) x 1 pair |
| Output | Pro bias 5-pin (580V) and Normal bias 5-pin |
| Gain | 60 dB |
| Frequency Response | DC – 100 kHz (+0, -3 dB) |
| Total Harmonic Distortion | ≤ 0.01 % (100 V rms output) |
| Signal-to-Noise Ratio | ≥ 110 dB (A-weighted) |
| Power Supply | AC 100–240 V, 50/60 Hz, 30 W |
| Dimensions (W x D x H) | 195 x 330 x 70 mm (7.7 x 13 x 2.8 in) |
| Weight | 2.5 kg (5.5 lbs) |
| Features | High bias voltage for electrostatic headphones, low distortion, wide frequency response, dual bias output |
| Power On/Off | Front panel switch with LED indicator |
| Protection Circuit | Short-circuit protection, overcurrent protection |
| Chassis | Aluminum front panel, steel chassis |
| Accessories | Power cord, RCA cable, dust cover |
| Cleaning and Maintenance | Wipe with a dry cloth; avoid liquids; ensure ventilation slots are clear |
| Safety Precautions | Do not open; high voltage inside; disconnect power before cleaning |
| Repairability | Repairs should be performed by qualified technicians; contact Stax support |
Frequently Asked Questions - SRM-500T Stax
What type of headphones are compatible with the Stax SRM-500T?
The SRM-500T is designed for Stax electrostatic earspeakers with a 5-pin connector. Both Pro bias (580V) and Normal bias models are supported.
Can I use dynamic headphones with the SRM-500T?
No, the SRM-500T is an electrostatic headphone amplifier and only works with electrostatic headphones that require a high bias voltage. Dynamic headphones cannot be used.
How do I connect the SRM-500T to my audio source?
Connect your audio source (e.g., CD player, DAC, preamp) to the RCA input on the rear panel. Use high-quality interconnect cables for best performance.
What is the difference between Pro bias and Normal bias?
Pro bias operates at 580V and is used with newer Stax earspeakers (e.g., SR-007, SR-009). Normal bias is 230V for older models. The SRM-500T has outputs for both.
How do I clean the SRM-500T?
Use a soft, dry cloth to wipe the exterior. Do not use any liquids or sprays. Ensure ventilation slots are free from dust.
Is it safe to leave the unit powered on for long periods?
Yes, the SRM-500T is designed for continuous operation, but it is recommended to turn off the power when not in use to extend tube life (if applicable) and save energy.
What should I do if the unit does not power on?
Check the power cord connection and the wall outlet. Verify that the voltage selector (if present) matches your local mains voltage. If still not working, contact Stax support.
Can I use the SRM-500T with headphones from other electrostatic brands?
Only if they use the standard 5-pin Stax interface. Some brands like Koss (ESP) use a different connector; adapters may not be recommended.
How do I store the SRM-500T when not in use?
Store in a cool, dry place away from direct sunlight and heat sources. Cover with the included dust cover to protect from dust.
What is the warranty period for the SRM-500T?
Stax typically offers a 2-year warranty from the date of purchase. Check with your local dealer for terms.
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