Bryston BHA-1 Balanced Headphone Amplifier

The Bryston BHA-1 is a fully analog, Class A headphone amplifier designed to drive serious headphones with the same kind of control and headroom Bryston brings to its full-size power amplifiers.

In fact, Bryston describes the BHA-1 as essentially a miniature power amplifier for headphones.

With six fully discrete Class A operational amplifiers, up to 2 watts per channel, balanced and single-ended headphone outputs, switchable gain and three analog inputs, the BHA-1 is built for listeners who want a dedicated headphone amplifier without an onboard DAC or unnecessary digital circuitry.

It can also double as a high-quality analog preamplifier.

A Power Amplifier for Your Headphones

Headphones can present very different loads to an amplifier.

Some are relatively easy to drive. Others—particularly high-performance planar magnetic and higher-impedance dynamic headphones—benefit significantly from an amplifier with more available power and control.

The BHA-1 delivers:

2 watts per channel into 32 ohms

That gives it considerably more output capability than the headphone stages built into many DACs, integrated amplifiers and source components.

Fully Discrete Class A Design

At the heart of the BHA-1 are six fully discrete Class A operational amplifiers.

Rather than building the headphone section around inexpensive integrated amplifier chips, Bryston applies the same basic design philosophy used throughout its larger amplification products.

Class A operation keeps the amplifier devices conducting continuously, while the discrete architecture gives Bryston control over the individual components and circuit design.

The result is a headphone amplifier designed for low distortion, high output capability and wide dynamic range.

Balanced & Single-Ended Headphone Outputs

The BHA-1 accommodates both balanced and conventional headphone connections.

That makes it easy to use with a wide variety of premium headphones without limiting the system to one connection format.

For headphones equipped with balanced cabling, the BHA-1 provides a true balanced output architecture.

Traditional single-ended headphones are supported as well.

Three Analog Inputs

The BHA-1 is a completely analog component with three stereo input options:

• Balanced XLR
• RCA
• 3.5mm TRS

This gives you plenty of flexibility when connecting a DAC, CD player, streamer with analog outputs, phono preamplifier or other source.

And because there's no built-in DAC, you aren't locked into Bryston's choice of digital converter.

If you already own a DAC you like—or expect to upgrade your digital front end independently—the BHA-1 lets the headphone amplifier remain a dedicated analog component.

Switchable Gain

Different headphones require different amounts of gain.

The BHA-1 provides High and Low gain settings so the amplifier can be better matched to the sensitivity of the headphones being used.

• High Gain: Approximately 20dB
• Low Gain: Approximately 14dB

Low gain can provide better volume-control range with more sensitive headphones, while high gain gives harder-to-drive headphones additional output capability.

Use the BHA-1 as a Preamplifier

The BHA-1 isn't limited to headphones.

Bryston provides rear-mounted balanced XLR outputs, allowing the BHA-1 to operate as a high-quality analog preamplifier.

That opens up some interesting system possibilities.

A compact system could be built around:

DAC or Source → BHA-1 → Bryston Power Amplifier → Loudspeakers

Then plug your headphones into the BHA-1 when you want private listening.

For someone building a minimalist system around digital sources and headphones, the BHA-1 can potentially eliminate the need for a separate analog preamplifier.

No Fans

The BHA-1 is fully convection cooled.

There are no internal cooling fans adding mechanical noise to a quiet headphone listening environment.

That's particularly important when you're sitting only a few feet away from the electronics and listening through headphones where the noise floor of the room can be extremely low.

Built Like a Bryston

The BHA-1 uses a machined and anodized aluminum enclosure and faceplate, giving it the same purposeful construction found throughout Bryston's electronics.

It is available with:

• Silver or Black faceplate
• 17" or 19" faceplate
• Optional locking mechanisms on the balanced XLR connectors

The 17-inch version can also accommodate rack-mount ears.

Key Specifications

• Type: Balanced Headphone Amplifier / Analog Preamplifier
• Amplifier Architecture: Fully Discrete Class A
• Discrete Operational Amplifiers: 6
• Power Output: 2W per channel into 32Ω
• Stereo Inputs: 3
• Inputs: Balanced XLR, RCA and 3.5mm TRS
• Headphone Outputs: Balanced and Single-Ended
• Preamplifier Output: Balanced XLR
• Gain: Switchable High / Low
• High Gain: Approximately 20dB
• Low Gain: Approximately 14dB
• Frequency Response: 20Hz–20kHz
• THD+N: <0.005% at rated power
• Cooling: Passive Convection — No Fans
• Width: 17" or 19"
• Height: 2.71"
• Depth: 11.10"
• Weight: 11.7 lbs. / 5.3 kg
• Warranty: Bryston 10-Year Warranty
• Made in Canada

BHA-1 or a DAC/Headphone Amp?

This really comes down to how you want to build the system.

Many headphone amplifiers combine the streamer, DAC, preamplifier and headphone amplifier into one component.

That's convenient, but it also means replacing more of the system when you eventually want to upgrade one section.

The BHA-1 takes the opposite approach.

It's an analog headphone amplifier.

That's it.

Choose the DAC or source you want, connect it to the BHA-1 and let Bryston handle the amplification.

For someone investing in high-end headphones and building a system that can evolve over time, that simplicity can be a real advantage.

Experience the Bryston BHA-1 at The Grid HiFi

The Grid HiFi is your Bryston and high-end headphone audio expert in Houston, Texas.

Headphone matching matters. Impedance and sensitivity can vary dramatically between models, and a headphone that works fine from a conventional headphone jack may perform very differently when connected to a dedicated amplifier with substantially greater output capability.

The Grid can help match the BHA-1 with the right headphones, DAC, streamer, CD player, analog source and cabling, or design a compact system where the BHA-1 serves double duty as both headphone amplifier and preamplifier.

If you're building around difficult-to-drive high-end headphones or simply want a serious dedicated analog headphone amplifier without paying for another DAC, the Bryston BHA-1 is exactly that kind of component.

Contact The Grid HiFi for Bryston BHA-1 availability, demonstrations and system matching.