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Chi-Fi
Excellence
70mW @ 32ohms
Power Output
AKM AK4377
DAC Chip
Headphone Zone Certified Unboxed Units
Unboxed units are as good as new products with the product's packaging being unavailable. These products give you the same satisfaction of new products - but at down-to-earth prices. Usually, the product's packaging may have gotten damaged in transit. Customers use a product once or twice and then return it with opened up packaging.
Customer Returns
Returned headphones are fully functional products that have left the warehouse and therefore can no longer be sold as new as their packaging has been opened. The product may have been used once or twice by the customer who returned it.
Transit Damages
Sometimes we receive headphones in damaged packaging due to shipping accidents. These are brand new headphones with cosmetic flaws on the packaging.
Save Upto 15%
Since you won't get the original packaging, we give you a good discount compared to a new headphone.
Professionally Inspected
A thorough inspection means you receive a 100% working headphone with no sound output issues.
Original Warranty
All unboxed headphones carry the same warranty period as a brand new headphone would.
Unbiased Customer Service
We have the same Headphone Zone customer support experience for Unboxed Products or new products.
Unchanged Replacement Policy
Received a defective Unboxed unit? Return it under our Replacement Policy.
ALL Original Accessories
The unboxed headphones itself comes with all original accessories.7HZ PRESENTS THE ALL-NEW PORTABLE USB DAC & AMP, THE SEVENHERTZ 71
7HZ is a brand founded in 2012 by a team of engineers and audio enthusiasts who came together to break into the realm of audio products. 7HZ has had all the success in developing the most well-tuned IEMs and is now proudly introducing a USB DAC & Amp, the Sevenhertz 71. It is a simple device with audiophile-grade components in its circuitry. It enables precise high-resolution audio signal decoding effortlessly. The 7HZ 71 has a compact form factor and can be your daily ultra-portable DAC & Amp that can drive your beloved IEMs.
FEATURES HIGH-PERFORMANCE AKM DAC CHIPSET THAT DELIVERS PHENOMENAL AUDIO PERFORMANCE
7HZ 71 comes equipped with AK4377, a 32-Bit high-performance DAC chipset from AKM
Technologies. The AK4377 is a stereo advanced 32-bit high sound quality audio DAC with a built-in
ground-referenced headphone amplifier that adopted VELVET SOUND™ technology. The AK4377 has four types of
32-bit digital filters for better sound quality, achieving low distortion characteristics and a wide dynamic
range. It’s a high-performance, low-power consumption DAC chip that can analyse various digital formats
supporting high-resolution 32-Bit/384kHz PCM signals and DSD128 & DSD64. The AK4377 DAC chip takes the sonic
performance to great heights and delivers phenomenal sonic performance. Delve into pure sonic tranquillity
with the all-new 7HZ 71 USB DAC & Amp.
EASY CONNECTIVITY AND COMPATIBILITY FUSED WITH HIGH-QUALITY CONNECTOR CABLE
7HZ 71 is designed to be compatible with different devices. The devices running Windows, Android, iOS, and macOS are supported. Any device running Android V5.1 or higher can connect to it. The iOS lightning cable has to be bought separately for 71 to be compatible with Apple devices. The most recent 71 portable DAC & Amp from 7HZ features a high-purity connection cable. A four-stand, 36-core OCC Type-c cable assures the transmission of a pure, unadulterated signal. The result is a clean and distortion-free signal transmission. The design of 7HZ 71 does not use batteries. It is a plug-and-play-compatible device with low power consumption. You only need to plug it into your smartphone to enjoy high-resolution audio!
| DAC CHIPEST | AKM AK4377 |
| THD+N | -108dB / 0.0004% @ 32ohms |
| OUTPUT VOLTAGE | 1Vrms @ 32ohms |
| OUTPUT POWER | 70mW @ 32ohms |
| SINAD | 106dB |
| FREQUENCY RESPONSE | 20Hz 〜 40kHz |
| NOISE FLOOR | <0.9μV |
| PCM DECODING | 32bit/384Khz Maximum |
| DSD FORMAT SUPPORTED | DSD64, DSD128 (DOP) |
| WHAT YOU WILL GET | 1. 7HZ 71 |
| WHAT YOU WILL NOT GET | 1. Original packaging of 7HZ 71 |
1 Year Warranty
Don't sweat it, this 7HZ - 71 (Unboxed) comes with a warranty
from 7HZ that covers manufacturing defects.
All products featured on Headphone Zone are backed by an original manufacturer's warranty.
Read more about 7HZ's warranty in India.
Thank you Headphone Zone team for timely delivery especially in this situation and bringing this product to India I recommend everyone to check this one before considering other alternatives in the market.
Good Purchase with Good Delivery Experience!!! Delivery Experience - Extremely satisfied. The packaging was sufficient and delivered 2 days before the committed delivery experience. Delivered in almost 48 hrs.
Good and quick delivery from Headphone Zone and would recommend others to buy from them too. No issues from their end whatsoever.
Amazing support from the Headphone Zone team, this is my second product purchase. Delivery at critical times (COVID19), is just awesome, received my headphones one day before the committed time. Kudos to the team.
It’s one of the best sites to get premium quality headphones. Their service is unparalleled!! Would recommend 10/10. A Grade service!!
Experience was smooth. The Headphone Guru was kind and answered all my queries. The delivery was super fast. The product is genuine This is my go-to destination for everything audio from now on.