Innuos LPS1 Linear Power Supply

The Innuos LPS1 is a purpose-engineered linear power supply that represents one of the most cost-effective and immediately audible upgrades available to owners of the Innuos Stream1 — and, through its secondary output, a simultaneous power supply upgrade for a second component in the same system. Where the Stream1's standard switching power supply is already filtered to a medical-grade standard, the LPS1 replaces it with a linear supply of genuine audiophile ambition: a 150VA toroidal transformer, premium Mundorf capacitors, and high-end Nichicon filtering — all in a chassis machined to exactly match the Stream1 in both dimensions and finish. The sonic improvement is not theoretical; it is the kind of difference that resolves itself immediately on first listen, in the form of lower noise floor, improved low-level detail, and a more composed, confident presentation across the frequency range.

150VA Toroidal Transformer and Premium Capacitors

At the heart of the LPS1 is a 150VA toroidal transformer — a specification that ensures stable, consistent power delivery without the switching noise inherent in the kind of wall-wart supplies that accompany most streamers. Medical-grade AC filtering precedes the transformer, eliminating mains-borne interference before it has the opportunity to colour the audio signal. Premium Mundorf capacitors provide the energy storage and release characteristics demanded by audiophile-grade power supply design, while high-end Nichicon capacitors deliver the refined filtering that ensures the DC output is as clean as engineering at this price point can achieve. This is not a generic linear supply dressed in a matching enclosure — it is a component specified with the same seriousness as the Innuos Stream1 it is designed to partner.

Dual-Output Design

The LPS1 provides two independent outputs: the primary supply feeds the Stream1 directly, while a secondary 5V output — regulated by high-end Nichicon capacitors — is available for powering a second component. A network switch, DAC, router, or similar device can be connected to this secondary output, replacing its own switching supply and extending the LPS1's performance benefit across the system. For those running the Innuos PhoenixNET network switch, this secondary output represents a natural and worthwhile pairing — bringing the same linear power discipline to the network layer that the LPS1 applies to the streaming layer.

Integrated Grounding Port

A dedicated 4mm chassis grounding port allows connection to a system-wide grounding solution, providing a further mechanism for reducing electrical noise. Proper system earthing at this level addresses residual interference that even the finest power supply cannot entirely eliminate — and for those whose systems include a grounding unit, the LPS1's provision for this connection is a thoughtful and sonically significant inclusion.

Matched Chassis and Aesthetic Integration

The LPS1 has been designed as a visual and physical partner to the Stream1. The continuous 10mm CNC-machined aluminium front panel maintains the same fascia profile and finish as the Stream1, whether the two units are stacked vertically or positioned side-by-side. This is not merely an aesthetic consideration — the rigidity and mass of the machined aluminium enclosure contribute to the LPS1's electromagnetic shielding and vibration resistance, both of which matter in a component sitting this close to the audio signal path.

Backwards Compatibility

The LPS1 is not exclusively the preserve of Stream1 owners. It is also compatible with the Innuos ZENmini Mk3 and PULSEmini — making it an upgrade path of genuine breadth for existing Innuos users looking to extract further performance from their current system without replacing the source component itself.

Technical Specifications

Who Is It For?

The LPS1 is the natural next step for any Stream1 owner who has heard what the platform is capable of and wants more. It is also a sensible system-level investment for anyone running a second component — DAC, network switch, router — on a switching power supply they know is introducing noise into the chain. If you already own an Innuos Stream1 and have not yet heard it with the LPS1, the demonstration is one we would strongly recommend — the improvement is consistent, immediate, and not subtle.

Buying from Martins Hi-Fi

Martins Hi-Fi has been in Norwich since 1968. Elizabeth Gould runs the business today, and we stock only brands we have heard properly and stand behind.

We were proud to host the first UK Innuos Nazaré event, and we can demonstrate the LPS1 alongside the Stream1 in our Norwich showroom — so you can hear precisely what the upgrade delivers before committing. When you get in touch, you'll be speaking with Dave, Chris and Tim — experienced specialists who can advise on the LPS1 and your whole system.

Contact us at info@martinshifi.co.uk, call 01603 627010, or WhatsApp on 07554 687137. You can read more about how we work on our Why Martins Hi-Fi page. We are at 85–91 Ber Street, Norwich, NR1 3EY.