--- product_id: 9814133 title: "SMSL SAP-II PRO Headphone Amplifier Portable High Fidelity AMP 3.5mm/RCA 6.35mm Black" brand: "s.m.s.l" price: "$12.27" currency: USD in_stock: false reviews_count: 13 url: https://www.desertcart.us/products/9814133-smsl-sap-ii-pro-headphone-amplifier-portable-high-fidelity-amp store_origin: US region: United States of America --- # Low Noise Circuit Versatile Headphone Compatibility High Fidelity Sound SMSL SAP-II PRO Headphone Amplifier Portable High Fidelity AMP 3.5mm/RCA 6.35mm Black **Brand:** s.m.s.l **Price:** $12.27 **Availability:** ❌ Out of Stock ## Summary > 🎶 Elevate Your Listening Experience! ## Quick Answers - **What is this?** SMSL SAP-II PRO Headphone Amplifier Portable High Fidelity AMP 3.5mm/RCA 6.35mm Black by s.m.s.l - **How much does it cost?** $12.27 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/9814133-smsl-sap-ii-pro-headphone-amplifier-portable-high-fidelity-amp) ## Best For - s.m.s.l enthusiasts ## Why This Product - Trusted s.m.s.l brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Design:** Crafted with military-grade components for longevity and low radiation. - • **User-Friendly Setup:** Includes a quick start guide for a smooth audio experience. - • **Robust Headphone Support:** Drives high-impedance headphones effortlessly, delivering rich sound. - • **Seamless Input Switching:** Easily toggle between 3.5mm and RCA inputs without hassle. - • **Precision Power Distribution:** Engineered for stability, minimizing DC drift for pristine audio. ## Overview The SMSL SAP-II PRO Headphone Amplifier is a portable, high-fidelity audio solution designed for audiophiles. With dual input options and a precision power divider circuit, it ensures stable performance and exceptional sound quality. Its robust design supports high-impedance headphones, making it a versatile choice for any music lover. Enjoy seamless audio transitions and a durable build, all backed by a one-year warranty. ## Description SMSL SAP-II PRO Desktop Headphone Amplifier Portable Hafiz Audio AMP 3. 5mm/RCA input 6. 35mm Output Standard input interface: 3. 5mm/race stereo input(with switch) Standard output interface: 6. 35mm earphone jack SNR: ≥105dB Distortion: ≤0. 003%Frequency response: 20hz-30khz Output power: 900mw/600Ω, 180mw/300Ω, 450mw/100Ω, 610mw/62Ω, 910mw/32Ω, 1000mw/16Ω . The machine volume: 126mm x 74mm X30MM (including the protruding part) Weight: 500G (outside the actual shipping weight packing structure. ) Universal power supply voltage: 100-240ACV Packing lists: sari Pro Headphone Amplifier*1 DC24V Japan PSE certification power supply*1 6. 25mm 1/4" Male to 3. 5mm 1/8"Stereo Audio Adapter *1 Card *1 ## Features - 2 way switch input circuit (3.5 earphone seat and the RCA block),Replacement of the input signal is no longer need to pull line, just select the switch panel. high precision power divider circuit. Guarantee the stability of the circuit and reduce the DC drift output. - High input and output connection seat to ensure the signal channel is smooth and durable.It can drive various high impedence headphone. - Audio channel all use the United States Army Regulation DALE have a fever resistance Low noise, sound quality is good. Disadvantage: price is 20-100 times that of ordinary. - 6.35mm earphone output jack Additional 6.35 to 3.5 conversion base, apply to the use of HI FI headphones. - Certified power distribution Corrugated low, radiation small, durable.Warranty period: 1 year. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | S.M.S.L | | Manufacturer | Fiesand | | Part Number | H1 | | Item Weight | 1.15 pounds | | Package Dimensions | 8.66 x 6.54 x 2.36 inches | | Item model number | h1 | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Color | Black | | Included Components | Quick Start Guide | | Batteries Included? | No | | Batteries Required? | No | ## Images ![SMSL SAP-II PRO Headphone Amplifier Portable High Fidelity AMP 3.5mm/RCA 6.35mm Black - Image 1](https://m.media-amazon.com/images/I/51689x+koVL.jpg) ![SMSL SAP-II PRO Headphone Amplifier Portable High Fidelity AMP 3.5mm/RCA 6.35mm Black - Image 2](https://m.media-amazon.com/images/I/61XSdbTzhdL.jpg) ![SMSL SAP-II PRO Headphone Amplifier Portable High Fidelity AMP 3.5mm/RCA 6.35mm Black - Image 3](https://m.media-amazon.com/images/I/61e6klCaoyL.jpg) ![SMSL SAP-II PRO Headphone Amplifier Portable High Fidelity AMP 3.5mm/RCA 6.35mm Black - Image 4](https://m.media-amazon.com/images/I/41jouo4VEyL.jpg) ## Questions & Answers **Q: will this work with the Logitech G560?** A: Sorry can not help you on that. Thanks. **Q: what is the output impedance of this unit?** A: Hello,this decoder can connect a wide range of 6.35mm earphone seat,such as 1000MW /16Ω，180mw /300Ω etc. **Q: Does the smsl smsl sap-ii pro have adequate power to drive some sennheiser hd650 ?** A: I use the SMSL DAC VMV V2 384 KHz with this amp and it powers my Beyerdynamic DT 990 Pros well. ## Customer Reviews ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Solid amp! *by S***D on Reviewed in the United States on January 13, 2015* I bought this amp as a peripheral amplifier for monitoring when recording music, as my focusrite interface could never seem to muster the volume I need now and again.In any case-- I figured it wasn't a huge outlay for something that can output a watt into a 100ohm load- which I was initially thinking was going to be another case of exaggeration by a marketing department someplace.As it turns out- I don't think it's an exaggeration at all. I made the mistake of playing music loudly through my interface and monitors, and at a certain point, the music I was playing had a really big sub-bass hit, and my cans almost took flight (!)... I realized they were plugged in and the volume was super high... they were physically rattling on the tabletop. Lucky that I didn't blow them up... but sure convinced me that this amp has some power!I burned the 'lil SAP in for a solid 5 days of running music through it before really making a judgement as to how it sounded. It sounded a little raggedy up front having just listened at first to see what it did-- but lost that sheen pretty quickly playing into a set of beyer 770 pros hung over the arm of a soft chair for a few days. I was definitely surprised at how nicely it settled in after that time-- solid bottom end, loads of headroom, no shrill grainy top end. Absolutely serviceable and pleasant, and it's great to have an easily transportable 'reference system' in case i'm working someplace I can't bring my monitors that gets loud enough to really hear what's going on!Beyond the basic serviceability of the thing, it really is a solid feeling piece of gear, and if I were to go out of town for a while- I"d be happy to listen to my grados or my beyers with it and an mp3 player as a very decent portable system.With a solid source- you'd be hard pressed to go wrong with this amp and have much to complain about. Is it a high dollar, uber-fi tube equivalent? No. But it doesn't cost hundreds of dollars, and it ISN'T a tube amp. It's a solid, clean, solid state device that performs admirably at being a wire-with-gain. That said-- I sure don't MIND listening to it either. I'd recommend it for anybody looking for a solid honest monitoring chain for recording though.. hard to beat it with a solid set of interconnects for really knowing what's going 'to tape'. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars Great amp for the money! *by B***. on Reviewed in the United States on August 28, 2018* So far so good! Powerful little headphone amp for a great price. I use the rca input to connect a PS4 Slim via hdmi audio extractor and the 3.5mm input to connect any other device with a 3.5mm output. The sound quality is fantastic and the unit is easy to operate.I read some reviews stating audible clicking noises or problems with switches, volume knob, and inputs but I’ve had no such issues. Amp feels solid. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars You headphones will be very happy! *by D***R on Reviewed in the United States on May 4, 2019* Just what I was looking for. Quality sound, fair price, easy to operater. --- ## 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.us/products/9814133-smsl-sap-ii-pro-headphone-amplifier-portable-high-fidelity-amp](https://www.desertcart.us/products/9814133-smsl-sap-ii-pro-headphone-amplifier-portable-high-fidelity-amp) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*