LEAK is one of the great postwar British audio names, founded by Harold Joseph Leak and celebrated in the valve era for amplifiers like the TL/12 and the Point One series that prized low distortion long before it was fashionable. The modern revival of the brand pairs that heritage with contemporary digital engineering, and the TruStream is where that philosophy meets the network age. It is a full network streamer with a built-in DAC and analog outputs, wrapped in a vintage-styled chassis that visually echoes the LEAK Stereo 130 amplifier and CDT transport. For the enthusiast, the interesting story is what happens beneath that walnut wrap.
Core Architecture and Signal Path
What exactly is the LEAK TruStream?
The TruStream is a network streamer with a built-in DAC and analog outputs, meaning it takes music from your network or attached storage, converts it to analog, and feeds a preamp or integrated amplifier directly. It combines three traditionally separate boxes, a streaming renderer, a digital-to-analog converter, and a headphone stage, into one chassis. That integration removes an interconnect and an extra power supply from the chain, which reduces the number of places noise and jitter can be introduced before the signal reaches your amplifier.
Which DAC chip does the TruStream use and why does it matter?
The TruStream uses the ESS Sabre ES9038Q2M, a 32-bit converter built on ESS's HyperStream II modulator architecture with dedicated jitter elimination. This is a well-regarded mobile-class variant of ESS's flagship Sabre family, chosen because it delivers extremely low distortion and a very high dynamic range from a compact, efficient package. HyperStream II refers to the multi-bit delta-sigma modulator ESS uses to shape quantization noise far outside the audible band, which is why converters built on it can post such clean noise floors. The practical benefit is a conversion stage that is transparent enough to reveal recording detail without imposing an obvious character of its own.
How does the jitter elimination work and what does it do for the sound?
Jitter elimination in the ES9038Q2M works by reclocking the incoming digital audio against the DAC's own internal timing reference so that timing errors carried in from the network or source do not modulate the analog output. Jitter is timing uncertainty in the digital stream, and when it reaches the conversion stage it smears the analog waveform, producing sidebands around musical tones that manifest as hardness or a loss of image focus. By decoupling the conversion clock from the upstream timing, the TruStream keeps stereo imaging stable and instrumental timbres clean, which is exactly the kind of low-jitter behavior the Sabre platform is designed to guarantee.
What file formats and resolutions can it play?
The TruStream supports PCM up to 32-bit/768kHz and DSD up to DSD512, which covers effectively every consumer high-resolution format you are likely to own or stream. The 768kHz PCM ceiling means the converter never has to refuse or downsample the highest-rate files that exist in current libraries, and DSD512 support means native playback of even the most demanding DSD releases without conversion to PCM. For most listeners the real-world benefit is not the extreme numbers themselves but the headroom, the assurance that whatever you feed it is handled at full resolution.
Output Stage and Analog Design
What analog outputs does it have and when would you use each?
The TruStream provides balanced XLR outputs and single-ended RCA line outputs, giving you a choice based on your amplifier and cable run. The XLR connection carries the signal differentially, so noise picked up along the cable appears equally on both legs and is cancelled at the receiving end, which makes balanced the better choice for long runs or systems in electrically noisy environments. RCA is the right choice when your amplifier only accepts single-ended inputs, and it keeps things simple in a compact rack. Having both means the TruStream integrates cleanly with vintage and modern gear alike.
How good is the measured performance, and what do the numbers tell us?
The TruStream specifies THD under 0.001 percent and a signal-to-noise ratio over 120dB on the XLR output, both of which indicate a genuinely high-performance analog stage. THD under 0.001 percent means the harmonic distortion products the electronics add to the music sit roughly 100dB or more below the signal, well beneath the threshold where they color what you hear, so the output stage is essentially adding nothing of its own to the waveform. A signal-to-noise ratio over 120dB means the noise floor sits more than 120dB below full output, which is deep enough to preserve the quiet detail and low-level ambience in a well-mastered recording. Notably that figure is quoted on the balanced output, which is consistent with the noise-cancelling advantage of a differential connection, and it tells you the XLR path is the one to use when you want the last measure of quiet backgrounds.
Does it have a headphone output, and how is it intended to be used?
Yes, the TruStream includes a 6.35mm (quarter-inch) headphone output driven from its own amplification, so you can listen privately straight from the streamer without a separate headphone amp. The full-size 6.35mm jack rather than a 3.5mm socket signals that this is aimed at proper full-size headphones rather than earbuds. Because the headphone stage is fed by the same high-quality conversion as the line outputs, you get a coherent listening experience whether you are on speakers or cans, which is convenient for late-night sessions or for evaluating a recording up close.
Power Supply and Build
Why does the power supply design matter in a streamer?
The power supply matters because a streamer is a mixed-signal device where noisy digital circuitry, a network radio, and a sensitive analog conversion stage all share a chassis, and any supply noise that reaches the DAC or output stage degrades that 120dB noise floor. Clean, well-regulated power keeps the digital switching activity from contaminating the analog domain, which is what allows the low distortion and high signal-to-noise figures to be realized in practice rather than just on paper. In an integrated design like this, careful supply and layout discipline is what separates the specification from the listening result, and it is central to LEAK's low-distortion design ethos going back to the valve era.
What is the chassis made of and does it affect performance?
The chassis is vintage-styled with a real walnut wrap and aluminum trim, a look drawn directly from LEAK's classic amplifiers and matched to the current Stereo 130 and CDT. Beyond aesthetics, a solid enclosure with metal construction contributes mechanical rigidity and shielding, which helps keep external radio-frequency interference out and internal noise contained, both of which support clean conversion. The walnut wrap is genuine wood rather than a printed finish, which is part of why the unit is designed to sit proudly on a shelf rather than be hidden away. It is a deliberate statement that a streamer can be a piece of furniture as much as a component.
Connectivity and System Integration
Which streaming services and platforms does it support?
The TruStream is Roon Ready and supports Tidal Connect, Qobuz Connect, Spotify Connect, Apple AirPlay 2, and TuneIn, which covers the major ecosystems an enthusiast is likely to use. Roon Ready means it functions as a certified endpoint in a Roon system, so Roon handles library management, metadata, and multi-room grouping while streaming bit-perfect audio to the TruStream. The various Connect protocols let you control playback from each service's own app and hand the actual streaming off to the device, which keeps your phone out of the signal path and lets the streamer pull the audio directly. AirPlay 2 adds easy casting from Apple devices and multi-room use within the Apple ecosystem.
What digital outputs are included and why would you want them?
The TruStream includes optical and coaxial digital outputs, which let you send the raw digital stream to an external DAC or a processor if you want to bypass the internal conversion. This is useful if you already own a reference DAC you prefer, or if you want to feed a home theater processor or another zone, because the TruStream can then serve purely as a network transport. Having both optical and coaxial covers the two common S/PDIF connector types, so it will mate with whatever digital input your other equipment provides.
What are the two USB-A ports for?
The two USB-A ports are for connecting local storage such as USB drives or flash memory so you can play your own files directly, without depending on the network or a streaming subscription. This matters for enthusiasts with large local libraries or high-resolution downloads, since the TruStream can read those files and pass them through the same high-quality conversion path as streamed content. Two ports give you flexibility to keep more than one drive attached at once.
How does it connect to your network, and does the choice matter?
The TruStream connects via dual-band Wi-Fi or Gigabit Ethernet, and for critical listening the wired Ethernet connection is generally the more robust choice. Ethernet provides a stable, high-bandwidth link that comfortably handles the highest-resolution files without the congestion or interference that can affect wireless, while dual-band Wi-Fi (the ability to use both the 2.4GHz and 5GHz bands) gives you flexibility where running a cable is impractical. Because the streamer reclocks incoming data at the DAC, the network connection's job is simply to deliver the bits reliably, and either option can do that, with Ethernet offering the most consistency.
Where the TruStream Sits in the LEAK Lineup
How does the TruStream fit alongside the rest of the LEAK range?
The TruStream is LEAK's dedicated network streaming source, the digital front end that complements the brand's amplification and disc playback components. Where the Stereo 130 serves as the integrated amplifier and the CDT acts as a dedicated CD transport, the TruStream provides the streaming and DAC role, and its matching vintage styling with walnut and aluminum is intended to stack visually with those units. In a full LEAK system it becomes the hub for network audio and local files, feeding an amplifier through its balanced or single-ended outputs, while its own digital outputs leave the door open for future expansion. For the enthusiast building around the LEAK aesthetic and design philosophy, it is the piece that brings the classic sound into a modern, service-rich listening life.
Closing Thoughts
The TruStream is a thoughtfully integrated design that puts a capable ESS Sabre conversion stage, comprehensive streaming support, and genuinely quiet measured performance into a chassis that honors LEAK's history. The engineering priorities on display, low distortion, a deep noise floor on balanced outputs, effective jitter management, and broad format support, are exactly what an experienced listener looks for in a one-box digital source. It asks you to run a network cable, pick your service, and let the conversion stage disappear behind the music, which is precisely what a good streamer should do.
