--- product_id: 660469005 title: "– S.M.S.L H400 Hi-Res Headphone Amplifier 1000mW x 2 Hi-Fi Audio Fully Balanced 3 Speed Gain Control Hi-End Preamp High Output Power 15W/16Ω 7.5W/32Ω 4.4mm/XLR/6.35mm (Black)" brand: "is.m.s.li" price: "€ 1301.59" currency: EUR in_stock: true reviews_count: 4 url: https://www.desertcart.gr/products/660469005-s-m-s-l-h400-hi-res-headphone-amplifier-1000mw store_origin: GR region: Greece --- # 15W output power @16Ω Fully balanced design 3-speed gain control – S.M.S.L H400 Hi-Res Headphone Amplifier 1000mW x 2 Hi-Fi Audio Fully Balanced 3 Speed Gain Control Hi-End Preamp High Output Power 15W/16Ω 7.5W/32Ω 4.4mm/XLR/6.35mm (Black) **Brand:** is.m.s.li **Price:** € 1301.59 **Availability:** ✅ In Stock ## Summary > 🎧 Elevate your sound game with power and precision — don’t just listen, experience! ## Quick Answers - **What is this?** – S.M.S.L H400 Hi-Res Headphone Amplifier 1000mW x 2 Hi-Fi Audio Fully Balanced 3 Speed Gain Control Hi-End Preamp High Output Power 15W/16Ω 7.5W/32Ω 4.4mm/XLR/6.35mm (Black) by is.m.s.li - **How much does it cost?** € 1301.59 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/660469005-s-m-s-l-h400-hi-res-headphone-amplifier-1000mw) ## Best For - is.m.s.li enthusiasts ## Why This Product - Trusted is.m.s.li brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek, durable design:** Premium aluminium housing with tempered glass IPS display—style meets substance. - • **Precision volume control:** Electronic relay volume control eliminates channel deviation for flawless audio balance. - • **Remote control convenience:** Full-function remote lets you fine-tune your audio without missing a beat. - • **Power that commands attention:** Delivers up to 15W at 16Ω for crystal-clear, room-filling sound. - • **Tailored listening experience:** Switch effortlessly between low, medium, and high gain settings to match your headphones perfectly. ## Overview The S.M.S.L H400 is a high-end headphone amplifier boasting ultra-high output power up to 15W at 16Ω, a fully balanced discrete component design, and a 3-speed gain control for customizable audio performance. Encased in a sleek aluminium body with a laminated IPS display and tempered glass, it offers premium build quality and user-friendly remote control. Ideal for audiophiles seeking pristine sound clarity and powerful amplification. ## Description Built-in high efficiency and low noise power supply system Use of electronic relays to control volume,eliminating channel deviations Ultra-high power output Equipped with full-function remote control, good hand feeling, better quality, support full-function remote control ## Features - High output power and high-end preamp design: output power up to 15W at 16Ω and 7.5W at 32Ω, preamp output function can be used as a hi-end preamp. - High, medium and low gain switchable: unbalanced interface: low -11.8 dB, medium 0 dB,high 14.4 dB; balanced interface: low -5.8 dB,medium 6 dB,high 20.4 dB. - Fully symmetrical design with discrete components, ultra-high output, use electronic relays for volume control, eliminating channel deviation, built-in highly efficient and low noise power supply system. - Beautiful shiny quality aluminium housing, fully laminated colour lPS display with tempered glass, equipped with full function remote control, good hand feeling, better quality, support full function remote control. - 12 months warranty, you can return the item or replace a new one if you have any problems. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0D7BLKS7X | | Best Sellers Rank | 131 in Headphone Amplifiers | | Guaranteed Software Updates Until | unknown | | Item Model Number | H400-S | | Manufacturer | S.M.S.L | | Package Dimensions | 41.5 x 30.9 x 10.4 cm; 2.87 kg | ## Images ![– S.M.S.L H400 Hi-Res Headphone Amplifier 1000mW x 2 Hi-Fi Audio Fully Balanced 3 Speed Gain Control Hi-End Preamp High Output Power 15W/16Ω 7.5W/32Ω 4.4mm/XLR/6.35mm (Black) - Image 1](https://m.media-amazon.com/images/I/4156d36bzmL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ BEST BARGAIN IN HIFI PREAMPS PLUS GREAT HP TOO *by on Reviewed in the United States 9 June 2025* Wonderful HP amp, maybe one of the best on erf. The big surprise is how great of a hifi stereo preamp it is, as in with large power amplifiers with speakers. A couple of reviewers said as much so I gave it a shot. After a week I ordered another one. Might be the best sounding premp I've heard, a tie with Schiit Kara and Benchmark LA4 f not better. The display is the BEST, you can read it from 20 feet. The volume is so great, you can easily do one dB stabs all day. Also great news I put it on hi gain and that's where it remains. You needn't go past 25 for good volume and 30-32 is too loud in both my 2 channel rooms the meter reads over 95 dB. Cannot believe they sell these for so little money. It sounds better and is easier to use / read than my Topping Pre90. If you want to hear the best sounding preamp, give it a shot. I hardly ever use HP, sorry I can't wax on about that subject. In my TV room I run it fed by SMSL D400ES DAC, with the fiber optic coming from my Samsung TV. In my 2 channel room it's fed by the same DAC but with SMSL CD200T while driving Buckeye Purifi 9040 monos on JBL 4349 from the XLRs while the RCA outputs are running a pair of PSA 18 subs. One of the supreme bargains in all of hifi right now, take it from a guy who's been in it since the 80s. ### ⭐⭐⭐⭐⭐ Muy buen Resolucion *by on Reviewed in Spain 11 March 2026* Excelente resolucion, muy detallado y rapido. En Timbres medios, voces y Agudos excelente definicion muy tridimencional ### ⭐⭐⭐⭐⭐ SMSL H400 Headphone Amplifier *by on Reviewed in the United States 28 January 2025* Solid build quality. The was a huge improvement from the built-in headphone amp in my Marantz CR-612. I'm running a WiiM mini and CD player through a Topping E70 velvet into the SMSL H400 Headphone Amplifier. I have couple of headphones and IEMs. I feel like it's the 1st time I'm really hearing what they are capable of. Through out the entire frequency range everything is well controlled nothing is bloated or peaky. Good amount of power that leaves plenty of headroom. I'm using between 45-65% of volume in the headphone and IEMs respective gain setting. Separation and sound stage are well defined and well layered no matter which headphone or IEMs I'm using. I'm enjoying this next level of sound experience. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/660469005-s-m-s-l-h400-hi-res-headphone-amplifier-1000mw](https://www.desertcart.gr/products/660469005-s-m-s-l-h400-hi-res-headphone-amplifier-1000mw) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-09-20*