HO100 - Receiver S.M.S.L - Free user manual and instructions

Product Type	Headphone Amplifier / Receiver
Brand	S.M.S.L
Model	HO100
Dimensions (W x H x D)	150 x 128 x 39 mm
Weight	560 g (1.23 lbs)
Power Consumption	< 30 W (operation), < 0.5 W (standby)
Power Input	AC 100-240 V
Inputs	RCA (unbalanced) x1, XLR (balanced) x1
Headphone Outputs	6.35mm unbalanced x1, 4.4mm balanced x1
Output Power	3W x2 @ 16Ω, 1.5W x2 @ 32Ω, 200mW x2 @ 300Ω, 100mW x2 @ 600Ω
Signal-to-Noise Ratio (SNR)	134 dB
Dynamic Range	134 dB
Total Harmonic Distortion (THD+N)	-123 dB (0.00006%) @ 1kHz, 32Ω
THD	< -125 dB (0.00005%)
Output Noise	1.3 µV (APX555B measured)
Input Impedance	47 kΩ
Output Impedance	Near 0 Ω
Frequency Response	20 Hz – 500 kHz (-3 dB)
Gain Settings	Low (-9.5 dB), Middle (0 dB), High (+15.5 dB)
Protection Features	DC, overvoltage, thermal protection
Construction	High precision low temperature drift resistors, high quality relays
Warranty	1 year free repair (normal use), 7-day return/replacement

Frequently Asked Questions - HO100 S.M.S.L

What is the output power of the HO100 into 32 ohms?

The HO100 delivers 1.5W x2 into 32 ohms.

What inputs does the HO100 have?

It has one RCA unbalanced input and one XLR balanced input.

Does the HO100 have a balanced headphone output?

Yes, it includes a 4.4mm balanced headphone jack in addition to a 6.35mm unbalanced jack.

What is the THD+N specification?

The THD+N is -123 dB (0.00006%) at 1 kHz into 32 ohms.

How do I switch gain levels?

Use the Gain selection switch on the front panel to choose between Low (-9.5dB), Middle (0dB), or High (+15.5dB).

What does the indicator light mean?

A blue light indicates normal operation. A flashing red light means the system has triggered protection (e.g., overcurrent, thermal).

What is the warranty period?

S.M.S.L offers a 1-year free repair warranty under normal use, and a 7-day return/replacement policy from purchase date.

Can I use the HO100 with speakers?

No, the HO100 is designed exclusively for headphones; it does not have speaker outputs.

What power supply is required?

The unit accepts AC 100-240V via the IEC power inlet, suitable for worldwide use.

How do I clean and maintain the HO100?

Use a dry, soft cloth to clean the exterior. Avoid liquids and aerosols. Ensure good ventilation and keep away from heat sources.

USER MANUAL HO100 S.M.S.L

THD <-125dB,0.00005%

输入阻抗 47kΩ

耳放输出阻抗....接近 0 Ω

频率响应 20Hz - 500kHz(-3dB)

增益....低(-9.5dB),中(0dB),高(+15.5dB)

能量功耗(EN60065) ....../<30W

待机功耗 ....../<0.5W

体积....150x128x39mm(WxHxD)

重量 560g / 1.23lbs

部件介绍

The contents of this manual may be changed with the edition, and are subject to change without notice

Ver 1.0

Safety Notes

• Install this unit in a well ventilated, cool, dry, clean place-away from direct sunlight, heat sources, vibration, dust, moisture, or cold..

- Use the voltage specified on this unit Only. Using this unit with a higher voltage than specified is dangerous and may cause fire, damage to this unit, or personal injury. Our company will not be held responsible for any damage resulting from the use of this unit with a voltage other than that specified.

- Do not attempt to modify or fix this unit by yourself. Contact alesperson or customer service when any service is needed. The cabinet should never be opened for any reason.

- When not planning to use this unit for long periods of time (i.e. when going on vacation), disconnect the power cable from the AC wall outlet.

Important note:

The product specifications and information mentioned in this manual are for reference only. The content of this manual is subject to change without notice.

Warranty Terms

1. The Term of Service

Foshan Shuangmusanlin Technology Co., Ltd promises to offer good-quality products. If the product is broken in 7 days after purchasing when you use it normally, you can choose to send it back for return, replacement or repairing (only the product does not affect the second sales can be returned). Repairing for free in one year if you use it normally.

1. Date of purchase is in accordance with the date on invoice or receipt uesd by seller, and if you buy it on line, you can show the screenshot of trade.

2. If an inappropriate usage causes the unit damaged, the warranty will be void. As below.

3. All damages by inappropriate use, including using it under non-normal working environment or without following the instructions.
   • Dismantling, refitting, repairing by user in private.

4. Causing damage by using some fittings instead of the designative or accredited ones.

5. Cannot provide credible proof of purchase.

6. Sending it back to our company for repairing.

7. Contact your S.M.S.L Audio reseller for a return or replacement.

Features

• Ultra-low distortion precision feedback circuit, distortion as low as 0.00006%!
  • Ultra-low noise power supply design, so that the output noise is as low as 1.3uV (APX555B measured value, not equivalent);
  • Classic Toggle Switch for Operation;
  • Ultra-compact design, suitable for desktop headphone system;
  • High precision low temperature drift resistance, its performance is not affected by temperature;
  • High quality relays and popless sound design;
  • 3 Watts into 16 Ohm, 1.5 Watts into 32 Ohm;
  • 20 Hz to 500 kHz Frequency Response;
  • High, middle and low three gears can switch gain control;
  • The headphone amplifier has DC, comprehensive protection such as overvoltage and thermal protection;
  • Use high-efficiency and ultra-low noise power system.

Specifications

Input....Unbalanced x1, Balanced x1

Headphone output....6.35mm unbalanced x 1, 4.4mm balanced x 1

Output Power.... 3W x 2 (16 Ω)

1.5W x 2 (32 Ω)

200mW x 2 (300 Ω)

100mW x 2 (600 Ω)

SNR....134dB

Dynamic range....134dB

Output Noise....1.3uV

THD+N....-123dB, 0.00006% (1kHz, 32 Ω)

THD....<-125dB,0.00005%

Input Impedance.... 47kΩ

Amp output Impedance....Near 0 Ω

Frequency Response.... 20Hz - 500kHz(-3dB)

Gain.... Low(-9.5dB), Middle(0dB), High(15.5dB)

Power consumption(EN60065).... <30 W

Power consumption in standby mode.... <0.5W

Size....150x128x39mm(WxHxD)

Weight....560g / 1.23lbs

Specifications are subject to change without notice.

Display Interface and Instructions

1 Volume knob Power switch
2 6.35mm headphone jack
3 4.4mm balanced headphone jack
4 Gain selection
5 Input selection

6 Switch
7 Indicator light
8 RCA input
9 XLR balanced input
10 Power AC input(AC100-240V)

Note:

• Please turn down the volume before connecting the headphones to avoid excessive volume damage to the headset.
• According to the advice of health experts, do not listen to the headphones for a long time so as not affect your hearing.
• The indicator light turns blue after it is turned on. Flashing red means the system has triggered protection.