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Home/Head-Fi/Headphone DACs/iBasso D17 Atheris R2R with 1bit Dual Discrete DAC & Tube AMP

iBasso D17 Atheris R2R with 1bit Dual Discrete DAC & Tube AMP

iBasso

iBasso D17 Atheris R2R with 1bit Dual Discrete DAC & Tube AMP

Product code:
D17 Atheris R2R
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Free delivery 7 - 14 days
1-year-warranty
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£1,699

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iBasso D17 Atheris R2R with 1bit Dual Discrete DAC & Tube AMP

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Features

  • In-house developed R2R + 1bit dual discrete DAC & tube amp
  • Four-channel fully balanced symmetric R2R architecture
  • Features dual Korg 6PI Nutubes
  • FPGA-Master 3.0 ensures nanosecond-level I/O precision
  • Delicate sound with a natural analogue presentation
  • Custom 24-position 4-section stepped attenuator, with channel tolerance less than +/- 0.1dB
  • Double Volume Control: Analogue + Digital
  • Double Battery Architecture: DAC and Amplifier Operating from Independent Batteries
  • Two Accusilicon ultra-low phase noise femtosecond crystal oscillators
  • iBasso custom film capacitors and vintage SPRAGUE capacitors

Specifications

R2R DAC

4.4mm Balanced Phone Out:

Output Level

7Vrms (AMP H Gain + DAC H Gain)

Output Power

1200mW + 1200mW @ 32Ω (Distortion <1%)

THD+N

–76dB (Tube Amplification)

SNR

116dB (AES17–20K A–weighted)

Dynamic Range

116dB (AES17–20K A–weighted)

Crosstalk

129dB

Frequency Response

15Hz – 22kHz at –1dB / 15Hz – 40kHz at –2.5dB

Output Impedance

1.9Ω

3.5mm Single-Ended Phone Out:

Output Level

3.5Vrms (AMP H Gain + DAC H Gain)

Output Power

320mW + 320mW @ 32Ω (Distortion <1%)

THD+N

–70dB (Tube Amplification)

SNR

112dB (AES17–20K A–weighted)

Dynamic Range

112dB (AES17–20K A–weighted)

Crosstalk

125dB

Frequency Response

15Hz – 22kHz at –1dB / 15Hz – 40kHz at –2.5dB

Output Impedance

1Ω

4.4mm Balanced Line Out:

Output Level (Low Gain)

Output Level (Low Gain)

Output Level (High Gain)

Output Level (High Gain)

THD+N

THD+N

SNR

SNR

Dynamic Range

Dynamic Range

Crosstalk

Crosstalk

Frequency Response

Frequency Response

3.5mm Single-Ended Line Out:

Output Level (Low Gain)

Output Level (Low Gain)

Output Level (High Gain)

Output Level (High Gain)

THD+N

THD+N

SNR

SNR

Dynamic Range

Dynamic Range

Crosstalk

Crosstalk

1Bit DAC

4.4mm Balanced Phone Out

Output Level

3.5 Vrms (AMP H Gain + DAC H Gain)

Output Power

340mW + 340mW @ 32Ω (THD < 0.5%)

THD+N

−76dB (Tube Amplification)

SNR

109dB (AES17–20K A–weighted)

Dynamic Range

109dB (AES17–20K A–weighted)

Crosstalk

123dB

Frequency Resp.

15Hz – 22kHz (–1dB)

Frequency Resp.

15Hz – 40kHz (–2.5dB)

Output Impedance

1.9Ω

3.5mm Single-Ended Phone Out

Output Level

1.7 Vrms (AMP H Gain + DAC H Gain)

Output Power

87mW + 87mW @ 32Ω (THD < 1%)

THD+N

−70dB (Tube Amplification)

SNR

104dB (AES17–20K A–weighted)

Dynamic Range

104dB (AES17–20K A–weighted)

Crosstalk

118dB

Frequency Resp.

15Hz – 22kHz (–1dB)

Frequency Resp.

15Hz – 40kHz (–2.5dB)

Output Impedance

1Ω

4.4mm Balanced Line Out

Output Level

2 Vrms (DAC Low Gain)

Output Level

2.4 Vrms (DAC High Gain)

THD+N

−114dB

SNR

118dB (AES17–20K A–weighted)

Dynamic Range

118dB (AES17–20K A–weighted)

Crosstalk

120dB

Frequency Resp.

15Hz – 22kHz (–1dB)

Frequency Resp.

15Hz – 40kHz (–2.5dB)

3.5mm Single-Ended Line Out

Output Level

1 Vrms (DAC Low Gain)

Output Level

1.2 Vrms (DAC High Gain)

THD+N

−110dB

SNR

114dB (AES17–20K A–weighted)

Dynamic Range

114dB (AES17–20K A–weighted)

Crosstalk

100dB

Frequency Resp.

15Hz – 22kHz (–1dB)

Frequency Resp.

15Hz – 40kHz (–2.5dB)

USB–C (DATA)

Supports PCM 768kHz / DSD512

3.5mm Coaxial

Supports PCM 768kHz / DOP256

3.5mm Optical

Supports PCM 192kHz / DOP128

OUTPUT

4.4mm Balanced PO, 4.4mm Balanced LO

3.5mm Single–ended PO, 3.5mm Single–ended LO

USB–C (Charge)

Supports 5V/3A and QC3.0 quick charging

Charging Time

3 hours

Playtime

15 hours

Dimensions

145mm x 86.3mm x 31.6mm

Weight

470g

 

 

 

Description

R2R+1bit Dual Structures – A New Benchmark For Portable DAC & AMP’s

The D17 utilises our in-house developed discrete R2R and 1bit DAC. It features a four-channel fully balanced symmetrical R2R discrete component DAC, utilizing a total of 284 high-precision film resistors with an accuracy of 0.01%. The R2R decoding provides a natural, delicate sound with a natural analogue presentation, offering a unique lively listening experience. Our in-house developed 1bit DAC employs 8 sets of 8E, totalling 64 PWM-DACs, delivering a landscape of rich musical details and extremely high resolution audio playback.



Four-channel Fully Balanced Symmetric Architecture R2R with 284pcs Ten-thousandth High-precision Resistors

The D17 adopts a four-channel fully balanced symmetrical R2R architecture, meticulously selected 284 ultra-precise film resistors with a tolerance of one ten-thousandth. Equipped with our in-house developed hardware resistor compensation circuitry and software compensation algorithms, the D17 achieves a THD+N of -104dB in R2R mode, outperforming mainstream R2R devices by over ten decibels and competes with various flagship R2R desktop DACs. R2R decoding offers a rich analogy voicing, producing a warm, delicate sound with exceptional musicality.

64 PWM-DAC, 1bit Architecture – Opening the Door to Acoustical Realism

In 1bit mode, the four channels L+, L-, R+, and R- each have 16E, totalling 64 PWM-DAC units working together. Controlled by the FPGA-Master 3.0 with nanosecond-level precise I/O delay management while compensating for “wiring delay” to ensure that the signal edges arriving at the DAC are aligned and strictly synchronised. This not only achieves an impressive THD+N of -114dB but also significantly enhances sound detail and density.



FPGA-Master 3.0 Inside –  Nanosecond-level Precise Control, Global Clock Regeneration

The D17 is equipped with iBasso’s in-house developed FPGA-Master 3.0 architecture, deeply integrated with two Accusilicon ultra-low phase noise femtosecond oscillators to create a pure, unified single clock source. Through nanosecond-level high-precision delay control and real-time clock regeneration technology, the system can simultaneously compensate for R2R decoding and 1bit decoding, reducing clock jitter and distortion to extremely low levels. This ultimately delivers highly accurate sound reproduction, ensuring that every detail is presented in its original form.



Dual Korg 6P1 Nutubes – Fully Balanced Headphone AMP With Incredible Power

The two Nutube 6P1 tubes on the D17 impart a unique tube character and a warm, mellow yet dynamic texture to the sound. The anode is powered by a 24V high-voltage supply, providing better linearity. Paired with the high-performance TI buffer amplifier BUF634A, it ensures a steady and powerful source of power. As a result, the D17 can deliver over 1200mW + 1200mW at 32Ω, easily driving a wide range of flagship IEMs and high-impedance headphones.



Three-layer Composite Seismic Isolation System – Secondary Reduction of Microphone Effect

The D17 adopts a composite isolation system composed of a double-layer PCB combined with damping materials. The two PCB layers are connected via pin connectors, effectively dispersing and attenuating lateral stress and significantly reducing resonance. The tube is placed on the second PCB layer using damping materials, providing a secondary reduction of microphone effects. Actual measurements show that the microphonic effect is below the human ears’ perceptual threshold. Among all iBasso tube amplifier products, it consistently performs at the forefront.



Dual Battery Architecture Demonstrates Solid Power – Pure Sound Quality Performing at Top Levels, Including Complex Passages

The D17 features a dual battery power supply architecture, with the DAC and headphone amplifier powered by separate batteries. This dual architecture ensures that the headphone amplifier section receives a stable current supply while effectively isolating digital interference. Whether under high gain or heavy load, the D17 can consistently maintain a pure and stable output, significantly reducing distortion caused by unstable power supplies. It truly delivers a clear and pristine sound quality, capable of presenting your recordings with the utmost musical quality.



24 Position 4 Section Stepped Attenuator – Analogue & Digital Volume Controls

The D17 supports both analogue and digital volume adjustments. The analogue volume uses iBasso’s 24-position 4-section stepped attenuator, which is only one-tenth the size of the traditional stepped attenuator while retaining all their advantages. The difference between the left and right channels is less than +/- 0.1dB. Digital volume adjustment is performed via a professional DSP module. The combination of analogue and digital volume control allows for more precise volume output.



In the Box

iBasso D17 Atheris
Leather case
Pouch
Power cable
Audio cables (see image)
User manual

Warranty

Backed with 1-year of Manufacturer Warranty

Delivery Info

 

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Delivery Information

As a company, our primary goal is to provide a seamless service that results in customer satisfaction. We aim to deliver within 3 working days. Unfortunately, there may be occasions where this time frame may not be met due to unforeseen circumstances; in this instance, we deliver product/s as soon as possible. All delivery charges are included within the prices quoted unless otherwise specified.

All small items are usually delivered between 9 am and 6 pm, Monday to Friday, unless a Saturday delivery is requested. Follow My Parcel is an industry-changing innovation from DPD Local, which will give your customers unparalleled levels of information and peace of mind. Not only will your customers receive a one-hour delivery timeslot, but they’ll also be able to track the progress of their parcels on a map as our drivers make their way to the delivery addresses. Follow My Parcel will:

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