Hifime S2 USB and SPDIF DAC (Sabre ES9038q2m)

Hifime S2 USB and SPDIF DAC (Sabre ES9038q2m)
Views: 66629 Brand: HiFime
Product Code: 10000160
Availability: In Stock

Available Options

USB Cable - microUSB in DAC end connecting to:

Optical cable:

Qty: Add to Cart

The Hifime S2 is an USB DAC with an additional optical (spdif) input. It's based on the Sabre DAC Chip ES9038q2m from ESS Technologies which is the latest generation of the mobile hifi DACs and succeeds the ES9023, ES9018k2m and ES9028q2m. It’s a very high-performance 32 Bit stereo DAC featuring the patented 32-bit HyperStream II DAC architecture and Time Domain Jitter Eliminator. It's more powerful with 49mW of output to 32 ohm and can drive most headphones and also line level loads (preamps and amplifiers). 

Exchangeable Cable
We have constructed this DAC to use interchangable cables so that you can use it with any device without adaptors. The DAC has a microUSB female connector, and we have available cables to connect to:

  • Regular USB Type-A (computers any most devices)
  • Type-C (newer Android phones)
  • MicroUSB (older Android phones)
  • Lightning (iPhone) - unfortunately the lightning connection requires a proprietary Apple chip to be included inside the cable, which makes it quite expensive. Still it's a great way to be able get use this ES9038q2m DAC with iDevices.
  • The S2 also works with the original Apple Lightning cable ($29 from Apple), then you'll also need a type-A cable to connect to the lightning cable

Optical SP/DIF input
The optical input can be used with devices such as TV’s, Chromecast Audio, routers like Apple Airport express, CD players and many other devices. The optical input accepts all sample rates up to 192kHz/24 bit. When the optical input is used you need to connect power through the USB port with a microUSB cable. Power can be provided from any normal USB port, a USB charger or a dedicated USB power supply. It only needs 30-50mA.

The optical input uses 3.5mm connector. We can supply a cable with 3.5mm in one end and TOSLINK in the other. Additionally a TOSLINK to 3.5mm connector can be used in case your source device also uses 3.5mm connector and you’ll need 3.5mm in both ends. 


LEDs indicated Power and Signal
There are 2 LED lights that indicates Power and Signal lock.

USB Input
USB input accept all sample rates up to 96kHz and 24 bit and works without drivers on most computer system. Android devices works but Android support depends on the actual phone model and the Android OS software version. We have tweaked the settings on this version so that iPhones doesn't (incorrectly) believes that it requires too much power. We have also tested the different cables with many phones.
If both optical and usb is connected at the same time then optical input will take priority and USB is only used for power only.

Type-C cable with Android phoneLightning cable with iPhone

  • ESS Sabre ES9038q2m DAC chip and SABRE9602 output stage driver. SA9023 USB receiver chip
  • THD compensation - minimizes distortion from external components
  • USB input accepts 32kHz, 44.1kHz, 48kHz, 88.2kHz and 96kHz input files @16 and 24 bit.
  • Optical SPDIF input accepts:  32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176kHz and 196kHz inputs @16, 24 and 32 bit. 
  • Adaptive asynchronous USB mode (adaptive USB transfer mode with DAC clocked by dedicated oscillator)
  • USB input volume controlled by computer vol +/- keys
  • Low power usage ideal for mobile: 30-50 mA depending on sample rate and volume
  • Dimensions:5.5 x 3.5 x 1.8 cm (without cable)
  • Weight 20g (excl. cable)


  • THD% 0.00087
  • SNR 114dB
  • THD+N = 0.001%
  • 49mW to 32ohm
  • 2V (6.7mW) to 600ohm

​model: S2


Manual available here

5 ( 5 / 5 )
I ordered this as a short term solution before ordering the UDA38Pro. I'm impressed over the sound. Especially when running uncompressed from MBP over USB. In my ears, the USB input sound a bit better than the optical. On Macbook Pro, please be sure to set the output to 24bit/96 to get the best out of it. Also works with apple camera connetion kit on iPhoneX. Even though the limitation in output power from the iX limits the performance a bit. I also have the Hifime 9018 but this one sound even better and have a wider soundstage with a "darker" background. Very versatile device and for the bucks this is really to recommend. Have now ordered the UDA39PRo based on reviews on the forum and really looking forward to it. Running on Beolab Penta, AKG K550 and AKG N40.
2 ( 2 / 5 )
Very crisp sound from PC, I like it. But not recognizied from iOS 12.4.1 iPhone X(I tested hifime Micro B to lighting and Apple Camera USB adapter). HIFIME reply: We just found that the 12.4.1 iOS update broke compatibility with the lightning cable. We will update it to work with 12.4.1. You can contact us to exchange the one you have.
5 ( 5 / 5 )
A very good DAC .. great quality and soundstage .. highly recommended !
5 ( 5 / 5 )
Upgrading from the 9018 this has more power and cleaner detail retrieval. One of the most underrated audio products i've ever found.
5 ( 5 / 5 )
This is superior to the old 9018. Wow! Throw away your old and buy this one. Deeper cleaner base, extended highs, better soundstage with the slight harshness of the 9018 gone. I totally agree with the previous review. I must admit that i did not notice an increase in volume. I would need to A/B with old to notice if it is indeed louder. ----merged reviews---- To Mr.Azza Please return your device because it is obviously defective. I myself have had a harsh 9018 and had to return it for a replacement. Both the review by Simon and myself noticed a significant difference in sound quality in every aspect. The device also has 20% greater volume than the 9018. My son just bought it and also noticed the superior sound and increased volume vs. the 9018 immediately.

Write a review

Your Name:

We do not moderate any reviews except those postings that are clearly not reviews. Questions or comments that are not reviews might be deleted. If you have a question, please contact us. Note: HTML is not translated!

Rating: Bad           Good

Enter the code in the box below:

The Hifime S2 is an USB DAC with an additional optical (spdif) input. It's based on the Sabre D..
7 reviews

The Hifimediy USB isolator is used to prevent ground loop noises and increase sound quality. It work..
25 reviews

Good quality headphone to RCA cable. Gold plated plugs. Also available as 0.5 meter: https://hifi..
1 reviews

Best portable DAC in Norwegian newspaper VG! 6 stars and best portable DAC of the Year in Lyd og Bil..
39 reviews

HIFIME SPDIF OPTICAL DAC with Sabre 9018 chip Background The new SPDIF DAC features the ESS ..
10 reviews

Our original and bestselling USB DAC with Sabre ES9023 DAC chip, Savitech SA9023 USB receiver. ..
43 reviews

This model is discountinued. Look at the 9018 model instead:
43 reviews

US :