NEWS | SMSL H200: A New Fully Balanced Headphone Amplifier for Desktop Hi-Fi

S.M.S.L has introduced the H200, a new fully balanced discrete headphone amplifier and preamplifier designed for modern desktop Hi-Fi systems. A headphone amplifier needs to do more than simply deliver high output power. Different headphones can vary significantly in impedance and sensitivity, while sensitive IEMs place very different demands on an amplifier than harder-to-drive full-size headphones.

The S.M.S.L H200 is designed to cover both ends of that spectrum.

Built around S.M.S.L's PLFC+ fully discrete amplification circuit, the H200 combines up to 5W of balanced output power, three selectable gain levels, relay-based volume control, and a custom linear power supply. It also functions as a balanced preamplifier, allowing it to serve as the control center of a compact desktop Hi-Fi system.

For listeners who already use a standalone DAC and want a dedicated amplifier for headphones, IEMs, and active monitors, the H200 offers a flexible combination of power and control.

Fully Balanced Discrete Amplification

At the heart of the H200 is SMSL's PLFC+ fully discrete amplification circuit.

The design is focused on maintaining low noise and distortion while providing the output capability required by demanding headphones. According to SMSL's specifications, the H200 reaches a 131dB signal-to-noise ratio, 131dB dynamic range, and THD+N as low as 0.00007% under specified test conditions.

Its headphone output impedance is rated at near 0Ω, which is particularly useful when pairing the amplifier with headphones and earphones that have different impedance characteristics.

Rather than being designed around one specific type of headphone, the H200 is built to accommodate a much broader range of desktop listening setups.

5W Balanced Output for Demanding Headphones

The H200's balanced headphone output delivers up to 5W at 32Ω, giving it substantial headroom for headphones that require more amplification.

Its rated balanced output varies with headphone impedance:

The unbalanced output is rated at up to 2.5W at 16Ω and 2W at 32Ω.

These figures matter more than the maximum 5W specification alone. They show that the H200 maintains useful output capability across both lower- and higher-impedance headphone loads.

On the front panel, users can choose between a 4.4mm balanced output and a 6.35mm unbalanced output, making the amplifier compatible with many common desktop headphone configurations.

From Sensitive IEMs to Full-Size Headphones

High output power is useful for demanding headphones, but sensitive headphones and IEMs require finer control at the other end of the range.

To address this, the H200 provides Low, Middle, and High gain settings.

Balanced gain levels are:

• Low: -3.5dB
• Middle: 6dB
• High: 19.7dB

Unbalanced gain levels are:

• Low: -9.5dB
• Middle: 0dB
• High: 13.7dB

The lower gain settings provide greater control when using sensitive earphones, while higher gain settings give users additional amplification for headphones with greater power requirements.

Combined with the H200's low noise specifications and near-zero output impedance, the three-stage gain system is what makes its 5W output more versatile: the amplifier is not designed only around maximum power.

For a deeper explanation of power, gain, output impedance, and headphone matching, see our headphone amplifier buying guide.

Relay Volume Control for More Precise Adjustment

The H200 uses a relay-based volume control system rather than relying solely on a conventional analog potentiometer.

One of the advantages of this approach is improved channel consistency, particularly at lower listening levels where channel imbalance can become more noticeable.

This complements the selectable gain system. Instead of using the same amplification level for every headphone, users can choose an appropriate gain range and then make finer volume adjustments within it.

That can be especially useful in a desktop setup where the same amplifier may regularly be used with multiple headphones or IEMs.

Built-In Linear Power Supply

The H200 incorporates a custom linear power supply directly inside the chassis.

For the user, one immediate advantage is a cleaner desktop installation. There is no separate external power brick sitting between the amplifier and the wall outlet.

More importantly, the power supply is part of the H200's overall amplifier design rather than an external accessory, providing the internal power architecture needed for its high-output discrete amplification stage.

Despite this, the chassis remains relatively compact at approximately 200 × 47.9 × 174.5mm, with a weight of around 1.2kg (2.65 lbs).

More Than a Headphone Amplifier

The H200 can also operate as a preamplifier, expanding its role beyond headphone listening.

It provides both balanced and unbalanced inputs as well as balanced and unbalanced preamp outputs. This allows the H200 to sit between a source/DAC and downstream audio equipment.

A dedicated headphone setup could be arranged as:

Digital Source → DAC → H200 → Headphones

For a desktop system using powered speakers:

Digital Source → DAC → H200 → Active Monitors

This makes the H200 particularly interesting for users who listen through both headphones and desktop speakers but want a single device to handle amplification and volume control.

Building a Desktop System Around the H200

Because the H200 is a dedicated analog headphone amplifier rather than an all-in-one DAC/amp, users are free to choose a DAC according to the inputs, digital formats, Bluetooth capabilities, and other features their system requires.

For example, pairing the H200 with the SMSL D200 creates a separate DAC and headphone amplifier configuration, allowing each component to handle a dedicated part of the signal chain.

Digital Source → SMSL D200 → SMSL H200 → Headphones

This modular approach also makes future upgrades easier. The DAC can be changed without replacing the headphone amplifier, or the H200 can remain in the system while other source components are upgraded.

Who Is the SMSL H200 For?

The H200 makes the most sense for listeners who want a dedicated headphone amplifier and prefer a modular desktop Hi-Fi system.

It is particularly worth considering if you:

• Already own a standalone DAC.
• Use both balanced and unbalanced headphones.
• Switch between sensitive IEMs and full-size headphones.
• Need additional output capability for harder-to-drive headphones.
• Want to use the same volume control for headphones and active monitors.
• Prefer separate DAC and amplification components rather than an all-in-one device.

If you only need a simple all-in-one DAC/headphone amplifier for a single pair of easy-to-drive headphones, a separate amplifier may not be necessary. The H200 becomes more relevant when flexibility, higher output capability, multiple headphone pairings, or preamplifier functionality are priorities.

SMSL H200 Key Specifications

Final Thoughts

The S.M.S.L H200 expands the company's desktop headphone amplifier lineup with a combination of high output capability, flexible gain control, low output impedance, precise relay-based volume adjustment, and preamplifier functionality.

Its balanced output provides substantial headroom for demanding headphones, while the dedicated low-gain mode and low-noise design make it suitable for more sensitive headphones and IEMs as well.

Beyond headphone amplification, the H200 can also function as a balanced preamplifier, allowing it to integrate into desktop Hi-Fi systems with active speakers or a separate power amplifier.

For listeners looking for a dedicated headphone amplifier that can handle a wide range of headphones while also serving as part of a broader desktop audio system, the H200 offers a flexible combination of power, control, and connectivity.

Explore the SMSL H200 →