iF Current 51
5 Balanced Armature Drivers Earphones
- 5 Balanced Armature Drivers Earphones & crossover technology
- Attractive Look
- Ergonomic Design
- IP57 Sweat-proof And Dustproof
- High-Quality Silver-Plated Copper Cable & Interchangeable Cable Design
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Free standard shipping to most countries
Free express shipping on orders over $270*. Enjoy free tax and duty paid to most countries. Please refer to our shipping FAQ to see if you apply.
Covid-19 Shipping Delay Notice
Linsoul Audio is the authorized distributor. All products are authentic and genuine.
Worldwide Free Shipping
We are located in China but send our products worldwide for free. T&Cs apply.
1 Year Warranty
We provide 1 year warranty for the all products except the cables*.
5 Balanced Armature Drivers Earphones & crossover technology
The iF Current 51 earphone stands out for its five high-quality balanced armature drivers, which deliver a supreme auditory experience. It can completely cover the frequency response range of 18HZ-28KHZ. The use of a 5-unit custom moving iron is not only a reflection of technology but also of CURRENT iF51's musical values. It delivers super smooth, detailed sound output with good resolution, and better performance of the vocal and sound stage. Experienced acoustic engineers at iF Current 51 have arranged the 5-driver configuration in a three-way frequency division using professional crossover technology. This allows the drivers to perform perfectly while maintaining low distortion levels.
The whole earphones are made of handmade transparent crystalline cavity material, and every color match is thoughtful and natural. iF Current 51 offers four popular colors, you can find one that suits your mood and desire. Good earphones are not only due to good sound quality but also should be a unique and excellent accessory.
Combined with excellent ergonomic design, it will not feel uncomfortable to listen to music for a long time. Lightweight ear hooks keep the earphones securely, even during vigorous movement. Just sink into your music world.
IP57 Sweat-proof And Dustproof
IP57 waterproof and dustproof thanks to the sealed cavity and glazed coating, IP57 waterproof rating offers more possibility to use for sports or even in the rain. The earphones are more durable and suitable for many environments.
High-Quality Silver-Plated Copper Cable & Interchangeable Cable Design
For materials, we strictly selected some of the high-end materials in this market. iF Current 51 is equipped with premium high-purity silver-plated material that is committed to bringing the ultimate music experience to music lovers. Adopt a standard MMCX connector, it can be replaced with another earphone cable and turned into TWS earbuds in seconds. Get more sound quality experience, matching the mainstream IEM in the market.
WHAT'S IN THE BOX
Our Shipping Process
If everything goes right our system will automatically generate your order and send you a confirmation email. If you don't receive the confirmation email please double-check that it wasn't automatically stored in your spam or promotions folder.
ORDER PROCESSING3 Working Days*
Most of the items you see are in stock and ready to be shipped after 3 working days. If you plan to order a custom (Design or Fit) product, a pre-order, or a made to order item processing times may change on item to item basis.
Standard Shipping15 to 30 Days.
Standard shipping is offered free worldwide for orders under $269 USD (with some exceptions), but please consider that delivery times may vary considerably depending on your country, up to 90 Days.
Express Shipping3-6 Working Days.
Most items over $270 include free express shipping (DHL or similar). If your order total is under $270 you can manually add Express Shipping at the checkout page for $15.00 - $35.00USD
Which countries do you ship to?
We are generally able to ship to most countries via Express Shipping, and many countries via Standard Shipping. You may clarify this with our team to check whether Standard Shipping is available to your country.
We cannot ship to addresses that are "PO boxes or APO/FPO".
*Note: Generally, we can only do Selected Shipping to India and Russia. We can only do Express Shipping to Africa, Argentina, Hawaii, Kuwait, Mauritius, Montenegro and Sri Lanka, to name a few.
This may be subjected to changes due to unpredictable issues such as Covid, war, and etc.
How much does shipping cost?
We have two shipping methods - Standard Shipping and Express Shipping.
Standard Shipping is free for most countries, while Express Shipping is 15-35USD depending on your country. If your order is over 270USD, Express Shipping is free*.
*This applies for most countries. However, large items such as headphones and desktop DAC/AMPs (e.g. HarmonicDyne G200, MUSICIAN MDP-2, and etc.) are excluded.
Shipping fees exclude import taxes or processing fees that may be applicable for your country. Linsoul is not responsible for such fees. Should you refuse to pay the tax/customs fees, shipping fees will still be deducted from the amount paid for the two-way freight charges. The cost of the freight charges may be more than the amount reflected on your order due to tax and other miscellaneous fees.
Some parcels claimed to be “returned to the seller” may be destroyed by the post office or customs officers when buyers refuse to accept their parcels or fail to pay for their taxes. No refund will be processed for such cases.
Standard Shipping via YunExpress is a tax-inclusive option for some countries. However, Linsoul will not be responsible for additional administrative or handling fees charged by your local courier company or customs. Please kindly check this with your local customs.
For certain remote areas, there may be additional charges via Express Shipping. We will contact you if there is a need to make additional payments.
Please contact us before placing an order, should you have any queries regarding shipping.
How long does it take to receive the order after it is placed?
For in-stock products, your order will be shipped within 3 working days. You may check with our staff regarding the in-stock status of any products.
Customized items will take a longer time. Please contact our staff for more information.
On normal non-sale days, once your parcel has been shipped out:
- For Standard Shipping, it takes about 2-4 weeks for items to be delivered after shipping out. For some countries, it might take up to 2-3 months, depending on your country, its customs and other factors.* The duration for transit is something beyond our control. Linsoul will not be making refunds for such cases. Please consider an upgrade to Express Shipping or keep the waiting time in mind.
- For Express Shipping, it takes about 3-7 days for items to be delivered after shipping out.
*Note: Timings might be affected due to festive seasons or other unforeseen circumstances
What happens if the parcel has been shipped but not delivered?
- First, kindly contact your local courier using the local tracking number.
If your parcel were to be in transit for at least 3 months, it may have been lost in transit.
For orders below $50USD, you may either opt for a one-time reshipment of parcel OR a full refund of the amount paid in cash via PayPal/Credit/Debit card.
For orders above $50USD, we will only process a 50% refund of your order paid in cash via PayPal/Credit/Debit card. Should there be any concern about Standard Shipping, you are encouraged to opt for DHL Express Shipping instead.
- Customers are to bear the consequences and fees incurred, if the parcel was undelivered due to any of the following situation:
- Wrong address or phone number provided by recipient
- Recipient was uncontactable when courier company contacted
- Refusal to sign for the package by recipient
- Lost or damaged parcel because recipient opted for “no-signature delivery”
- Refusal to pay for the local tax/processing fee by recipient
- Refusal to provide supporting documents for custom clearance by recipient
Who will pay for the import tax/custom fees
Customers have to bear any form of custom/import/processing fees that are applicable for your parcel.
Should you be unwilling to pay for the fees and reject the delivery of the parcel, you will still have to pay for the shipping cost. Linsoul will only refund the amount of your order after deducting the two-way shipping fees incurred.
How do I get help for my order?
Cancellation or/and modification of orders can only be done manually via our staff, provided that our Warehouse Team has not processed your order.
As our Support Team might not be available during non-working days and weekends, please place your order wisely.
Should you really need to cancel or/and modify your order after purchase, please contact us via our support email (Support@Linsoul.com) or website chat. We will help you with the changes if that could be done.
In general, upon receiving your parcel, please confirm the contents of the package and ensure that the package is in good condition before signing for it. All customers are strongly advised to take an unboxing video of their parcel and packaging when opening their parcels and products.
For faulty/missing items, please send an email to support@Linsoul.com for after-sale services. The following details are required.
1) Send an email to support@Linsoul.com with an appropriate Subject Title
2) Provide your order number and state the issue clearly
3) Attach photos and videos to show that your product is faulty/missing. Shipping details on the parcel packaging have to be clearly visible.
If the photos/videos provided are insufficient to prove the stated issue, we will enquire more. Once the issue has been confirmed, we will arrange for a replacement, partial refund or a full refund (where applicable). For incorrect products, Linsoul reserves all rights in deciding whether you need to return the incorrect item or not. Please kindly contact us via email first. Our team aims to review your email within 3 working days.
For other queries, the fastest way to contact us is via our website or Discord
Linsoul Audio will not be responsible for parcels that have been damaged during the transit process.
Do I get tracking details for my order?
After placing an order, you will receive the order confirmation email. After your order has been shipped out, you will also receive a tracking email. You can track your order via the tracking number online. Should you not have received the emails or face any difficulties tracking your order, please kindly contact us for support.
For more than 1 orders placed under the same account and shipping address, Linsoul will automatically combine the orders and ship them out via one tracking number. Should you have special requests to have the orders shipped separately, please kindly contact us via Discord or our website's chat. We will do our best to help.
What shipping companies do you use?
We collaborate with these courier companies:
Standard Shipping: 4PX, UBI, NinjaVan, and Yun Express
Express Shipping: DHL Express, FedEx and SF Express
Last updated: 1 November 2022
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Let customers speak for us4049 reviews
I like the look and the feel of the cable and the mic is a nice addition. Sadly the cable is already breaking (right headphone stops working and stuff) after just little over a month of not so heavy usage.
Excellent headphones! I recommended them to all my friends and I’ve been using them non-stop for almost 2 months now. Didn’t believe they would be so good as what I heard but they beat all expectations!
Overprize for what they deliver, but they are good. Great delivery times. 5 star for Linsoul.
Just incredible value for the money. Not the last word in bass, soundstage or cable build quality. The cable is detachable, though.
Tuning is just bang on natural and upper mids/treble are very well presented that way. Not the most technical set but the naturalness of everything fixes pretty much all these "problems".
The accessories are also a wee bit thin in quantity and quality. (Tips in picture are NOT included, they are the OG TinHifi foam tips).
Then you come down to the price and at that point this set becomes what you would call a NO-BRAINER. Just a massively solid rec.
The Bass Bringer
This is my first product review from 7Hz and my second encounter on dual DD IEMs after QKZ X HBB Khan. This time, 7Hz takes a different approach on tuning that separates them from their competitors. Will they be able to succeed in their endeavour?
△ A solid, high quality aircraft-grade aluminium alloy shell chassis.
△ Good quality and quantity inclusions
△ That large, hard-bound, zippered IEM case.
△ An added extra filters is actually good gesture from 7Hz for the longevity of their sets.
△ Hard-hitting, tactile and boomy bass response that bass heads will truly appreciate.
△ Good power scaling capability.
△ Warm and sufficiently dense note weight in some parts of frequency range spectrum.
△ Smooth and non-aggressive treble response that devoid of any possible occurrences of sibilance or harshness.
▽ Noticeable bass bleeds across frequency range that affects the overall sound quality.
▽ Recession on some part of midrange region that impacts the tonal and timbre quality of some types of female vocals and even instruments.
▽ Treble quality is a bit smooth and subdued in my liking as it quite inadequate of being crisp and sparkling.
▽ It has a mediocre technical performance.
For more information, check the link below:
The bass is good but they’re a bit shouty, which is kind of distracting. They’re also pretty small iems, which was a plus for me. 8/10
Got a bunch of IEMs around 20 bucks from Linsoul and this set was one of them..
Spoiler alert: this set is NOT staying with me in the long run. Don't get me wrong, the tuning is absolutely great. It's the technical side of things that gets me eventually, and really pushes me towards letting these go. On top of that, the Salnotes set has a bunch of real tough customers to beat it on these areas:
Way more technical AND better tuned set is the Moondrop Chu. Especially combined with the Moondrop Dawn DAC. A good combo for the price!
Also got the CCA CRA. Way more fun. Just a fun, V-shaped hitter! Easily beats the Salnotes in this particular area, in my opinion.
BLON-BL03 was also one of my picks and that set will probably stay with me forever, just a monster on all around sound quality, not necessarily on the technical side but hammers down way more expensive sets, let alone the Salnotes. Just a natural sounding set, especially on hits and vocs.
There ya go! The Salnotes Zero is a very good set for the money, it just can't hang with this bunch of BEAST IEMs. It just sounds more muffled, more reserved, it sort of holds out more that the other sets give out on their respective areas. BUT it's 20 bucks and for that, it's an absolute rec for everybody to find out for themselves!
Thank you for your reaching out to us.
We appreciate you taking the time to give us feedback.We will give feedback to the manufacturer for your valuable feedback and We believe that we will do better and better in the future.
If there are any questions, please feel free to let us know.
Have a nice day!
TANGZU x HBB Wu Heyday Edition
The design is my favourite: build quality is extremely durable and surprisingly light despite the metallic design. The cable design is really good but the stickiness of the sleeve will reduce over time.
The box is unnecessarily huge, the soft extra layer is somewhat useless consider the iems’ durability. the box can also fit my other stuffs like my iphone 12 mini, power bank, adapters, keys, etc. So I think it is a pros :D.
The bass is immense, which result from the cable, ear tips, and the drivers.
For bass lover, it seems ideal, but for me, I prefer the neutral tuning.
Also, in order for the iems to sound at their best, you might need an amplifier or use it at high volume level, which why I don’t highly recommend these iems.
Lastly, my experiences using this iem is good. It has good control, the range is just enough, decent upper mid and treble. however, the stock cable is not the my favourite choice for sound quality. The appearance is the best among 7hz’s iems. For this price, the iem is really good but can’t compared to other 7hz’s iconics.
Short review of the Quartet and my full review is on YouTube (listed below).
It is a nice resin build. Comfort was good, fit was a bit tricky for my ears. The nozzle is shorter so I believe that is why I had issues. I ended up using a different size tip for each ear for proper seal.
Sound wise, here are the 4 options:
Both switches off (default tuning I'm guessing) will give you a good amount of bass. It extends very well. Midrange feels flat and you get a slight elevation of treble. Mids are a bit...muffled at times, but still give enough presence.
Both switches on: this is a more vshaped sound. Boosted bass and boosted upper regions of the FR. Great sound for casual, engaged, gaming and movie watching!
Left on and right off: this is my least favorite. Boosted bass but the rest is more flat. Gives to a dark tuning that is also warm up top. Perhaps useful for monitoring low end of music.
Left off and right on: this is probably more of a harman type tuning to me. Gives good bass still but then slightly boosts upper to give more presence. Great for vocals but also found good for natural instruments and classical arrangements.
Over all, I think the Quartet can have a switch tuning for everyone to enjoy. These can get bright to some, however, I did not feel they were for me.