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We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
If you want to add high-resolution Bluetooth streaming to a home stereo, powered speakers, or an older receiver you already own, choose eppfun Audio Receiver; if you need a pair of over-ear headphones with active noise cancelling for commuting, flights, and long listening sessions, choose Amazon Renewed Edifier W820NB.
• eppfun Audio Receiver — biggest strength: It turns a wired speaker, home stereo, or car stereo into a Bluetooth 5.0 destination with LDAC, aptX HD, aptX Low Latency, AAC, and SBC support, plus a 3D surround mode and more than 12 hours of playback per charge.
• eppfun Audio Receiver — biggest trade-off: It is a receiver, not a headphone. It has no built-in speakers, no microphone for calls, and no active noise cancellation, so everything it does depends on the audio gear you already own.
• Amazon Renewed Edifier W820NB — biggest strength: Over-ear hybrid active noise cancellation rated at -43dB, LDAC decoding, a 40 mm driver, 49 hours of playback, and a 10-minute fast charge that yields 7 hours of use.
• Amazon Renewed Edifier W820NB — biggest trade-off: It is a renewed unit, not new stock, so it carries a 90-day limited warranty rather than the full manufacturer warranty, and it is locked into the over-ear headphone form factor.
• Who each pick is for: Choose eppfun Audio Receiver if you want to upgrade the gear you already have. Choose Amazon Renewed Edifier W820NB if you want the listening device itself.
The eppfun Audio Receiver (model AK3040R Pro) is a bridge device. It takes a Bluetooth signal from your phone, tablet, or laptop and pushes it out through RCA or a 3.5 mm jack into something that was never designed to be wireless — a home stereo, a pair of powered speakers, a car stereo, or even a set of wired headphones. That is the entire point of the product, and it does that job with an unusually wide codec list: LDAC, aptX HD, aptX Low Latency, aptX, AAC, and SBC.
The headline spec here is LDAC at up to 990 kbps. That matters because it is the same high-bitrate ceiling that Edifier's headphones advertise, which means both products in this comparison are aimed at people who care about Bluetooth audio quality rather than just convenience. If your phone supports LDAC and your stereo is decent, this little box lets you stream from your phone without plugging anything in. There is also a 3D button that adds a surround-style effect with deeper bass from a regular stereo source, indicated by a green LED. It is a gimmick you may love or ignore, but it is there if you want it.
Amazon Renewed Edifier W820NB: Who It's For
The Edifier W820NB Plus is a full over-ear headphone, in green, using Bluetooth 5.2. It is sold here as an Amazon Renewed unit, which means it is a pre-owned or returned product that has been inspected and resupplied rather than a brand-new retail box. That is the single most important thing to understand before buying: you are trading the certainty of new stock for the renewed route, and the warranty is a 90-day limited one rather than the longer coverage a new unit would carry.
On the audio side, the W820NB Plus uses a 40 mm mantle-plated composite diaphragm driver and supports LDAC decoding at up to 990 kbps. Edifier's own comparison in the spec sheet puts LDAC at 990 kbps against aptX HD at 576 kbps, AAC at 512 kbps, and SBC at 328 kbps — a useful reminder that LDAC is the widest pipe of the group. The headphones also work wired over a 3.5 mm jack, which is a genuine advantage if the battery runs out or if you want to use them with a device that has no Bluetooth at all.
The other half of the story is noise control. Hybrid active noise cancellation is rated at -43dB, and the enclosed over-ear design is what makes that possible. There are also 7 levels of ambient sound so you can let outside noise back in when you need to hear a boarding announcement or a vehicle reminder. For calls, built-in mics use DNN noise cancellation. Comfort gets real attention too: 220 g (7.9 oz) of weight, memory foam earcups, and a zero-pressure patent that Edifier says is designed to stay comfortable even with glasses. Playback is 49 hours, and a 10-minute charge gives 7 hours.
I would point this at commuters, office workers, students, and frequent travelers. I would steer away anyone who specifically wants a new-in-box product with full warranty coverage, or anyone who prefers earbuds or on-ear fit.
• Best for upgrading an existing stereo or speakers → eppfun Audio Receiver. It feeds RCA and 3.5 mm outputs into the gear you already own.
• Best for personal listening anywhere → Amazon Renewed Edifier W820NB. It is a self-contained headphone; the eppfun unit cannot play anything by itself.
• Best for noise cancellation → Amazon Renewed Edifier W820NB. Hybrid ANC rated at -43dB plus 7 levels of ambient sound.
• Best for high-bitrate LDAC streaming → effectively a tie. Both support LDAC at up to 990 kbps; the difference is whether the sound comes out of your speakers or your ears.
• Best for long sessions without charging → Amazon Renewed Edifier W820NB. 49 hours of playback and a 10-minute fast charge for 7 hours.
• Best for a flexible battery-optional setup → eppfun Audio Receiver if you are powering speakers, or Amazon Renewed Edifier W820NB if you want the 3.5 mm wired option on a headphone.
• Best for calls → Amazon Renewed Edifier W820NB. DNN mic noise cancellation; the eppfun receiver has no microphone.
• Best for warranty peace of mind → Amazon Renewed Edifier W820NB, though note it is a 90-day limited warranty on a renewed unit.
• Best for the lowest-risk, no-moving-parts purchase → eppfun Audio Receiver. It is a new accessory rather than a renewed device, but it only works if you have something to plug it into.
In my opinion, the right answer depends on one question: do you already own good speakers, or do you need something to listen with? If you have a stereo, powered speakers, or a car setup you like, I would buy the eppfun Audio Receiver — it is the cheaper way to make existing gear wireless, and the LDAC, aptX HD, and aptX LL support covers almost every use case. If you are starting from nothing and want headphones for commuting, flying, and focused work, I would buy the Amazon Renewed Edifier W820NB and accept the 90-day renewed warranty as the price of entry for a 49-hour, ANC-equipped, LDAC-capable over-ear. If you can only pick one and you want to listen today, the headphones win by default — a receiver with nothing to plug into is just a box.
FAQ
what is ldac headphones
what is ldac support in headphones
It means the headphone contains the decoder needed to accept an LDAC stream from a compatible phone or player. Both products here list LDAC, but only the Edifier is a headphone. Your source device also has to support LDAC for the benefit to apply.
what is ldac codec in headphones
LDAC is a high-bitrate codec developed for wireless hi-res audio. Edifier's spec sheet compares it at 990 kbps against aptX HD at 576 kbps, AAC at 512 kbps, and SBC at 328 kbps. More bits per second generally means less compression loss.
what is ldac sony headphones
LDAC originated with Sony, so people often search for it that way. It is not exclusive to Sony hardware — any brand, including eppfun and Edifier, can license it. What matters is that both your source and your receiving device support it.
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See also: Amazon Renewed Edifier W820NB vs FiiO EH11, Amazon Renewed Audio-Technica ATH-M30x vs beyerdynamic DT 270, Amazon Renewed SONY WH1000XM3 vs audio Technica ATH-M50XBT2