{"product_id":"part-exchange-hifiman-ef400-in-silver-black","title":"Clearance: Part-Exchanged HIFIMAN EF400 in Silver\/Black","description":"\u003cp\u003ePackaging: Original\u003c\/p\u003e\n\u003cp\u003eAccessories: Missing the sticker but has the original power cable in it's packaging.\u003c\/p\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cdiv class=\"std\"\u003e\n\u003cp\u003eHiFi Man EF400 headphone amplifier and DAC is a well-designed but great-value headphone amplifier with a lot of finesse and power. The EF400 is a development of the legendary EF6 Desktop DAC\/Amp and this combination is growing in popularity. \u003cbr\u003e\u003cbr\u003eAdditionally, the amplifier is a compact unit but is designed to outperform many headphone amplifiers of a larger size and price. Connectivity is good and the DAC is a resistive network type usually seen on more expensive units. Finally, the sound is musical, tight and tuneful.\u003c\/p\u003e\n\u003ch4\u003eHigh-Quality Build and Multiple Outputs\u003c\/h4\u003e\n\u003cp\u003eYou will be impressed with the heft of this device as well as its finish. The brushed aluminium and black finish are slightly retro with a modern twist. There are four headphone outputs that cover every eventuality. Two are balanced and two are single ended via 6.3mm, 3,5mm and even a Pentacon 4.4mm output. There are also two XLR outputs. Finally gain is adjustable with or without oversampling. Additionally, There are RCA outputs for connection to an external amplifier.\u003c\/p\u003e\n\u003ch4\u003eHimalaya R2R DAC\u003c\/h4\u003e\n\u003cp\u003eThe Himalaya R2R DAC developed by the HiFi Man himself Dr. Fang, offers full PCM decoding up to 24 bits and 768kHz and a signal-to-noise ratio of 118dB. The THD is a miniscule, at 0.022%. The power amplifier is a class A\/B design that is fully discreet and includes 30,000uF capacitors. The output is 10.7V RMS, this will drive any type of headphones. Notably, the power supply uses an oxygen free copper wound toroidal transformer. The main reason why this is such a heavy unit\u003c\/p\u003e\n\u003ch4\u003e\n\u003cbr\u003eConnectivity and the DDHIFI TC28i\u003c\/h4\u003e\n\u003cp\u003eYou can connect a digital input via the USB B or USB C input. Additionally, you can connect you iOS device via a DDHIFI TC28i. This is a dongle that will connect your lightning connector to an external DAC via USB C. The USB inputs are on the rear of the device along with the on\/off switch and the power input.\u003c\/p\u003e\n\u003ch4\u003eOperation of the EF400 headphone amplifier\u003c\/h4\u003e\n\u003cp\u003eOperation of the EF400 is simple. Connect the power cord then connect the unit to your phone, PC or any other digital source, insert your headphones and switch on. The XLR and RCA outputs connect directly to the DAC to feed an external amplifier for more power, if needed. Unusually at this price point the EF400 uses the Himalaya DAC that uses a ladder of resistors to convert a binary signal to analogue. These are usually in very hi-end equipment, as they are expensive to produce.\u003c\/p\u003e\n\u003ch4\u003eMore Musicality with Non-Oversampling\u003c\/h4\u003e\n\u003cp\u003eThe maximum output power of the EF400 is 4.4 watts, more than enough for most headphones. Resistor chain R2R DACs with non oversampling are though to sound more musical and less analytical. Listening tests seem to agree, with a well articulated midrange and sweet and airy highs. The bass proved to be tight and tuneful. In oversampling mode the EF400 sounds a tad fuller. We think you’ll be hard pressed to find a better headphone amplifier at the price.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"HIFIMAN","offers":[{"title":"Default Title","offer_id":56215546462594,"sku":null,"price":279.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/6652\/0962\/files\/8123B86E-26AD-4509-AA59-12D366B128F8.jpg?v=1768427559","url":"https:\/\/premiumhomeaudio.co.uk\/products\/part-exchange-hifiman-ef400-in-silver-black","provider":"Premium Home Audio","version":"1.0","type":"link"}