iBasso D16 Taipan
Hi-Res Balanced Portable DAC and AMP
D16 is a DAC that utilizes iBasso's in-house developed FPGA-Master2.0 as the core and employs 16 sets of cascaded 8E PWM-DACs, with a total of 128 PWM-DACs (discrete) for 1bit D/A conversion. The measured THD+N is superior to 0.0001%, which is the best among current portable discrete DACs.
The AMP section is the super class A transistor amplifier that is very similar to the DX320MAX amplifier.
FPGA-Master 2.0
D16's FPGA-Master2.0 brings together iBasso's algorithm achievements from the past three years and is the reason we have been able to accomplish breakthroughs for our portable discrete DAC.
- FPGA plays the role of signal reorganization and recoding, which generates PWM signals that can be decoded by the subsequent PWM-DAC.
- DAC developers are well aware that when the THD reaches a certain level, the presence of noise becomes a hindrance to achieving a greater dynamic range. The D16's FPGA-Master2.0 boasts an impressive noise shaper that radically lowers the noise floor.
- Global clock regeneration technology is employed. Two Accusilicon femtosecond oscillators provide a clock reference for the FPGA. The FPGA regenerates the synchronous low-phase noise clock required by the DSP and USB receiver. 1bit DACs are very sensitive to clock jitter. We have tested a variety of femtosecond oscillators of various brands and Accusilicon's audio oscillator has a phase noise as low as -158dBc/Hz [@1kHz]. Compared with the -145dBc/Hz of a general femtosecond oscillator, the phase noise is reduced by 13dB, which guarantees excellent Jitter control for the D16.
- Picosecond-level precise delay control, which can set the I/O delay and compensate for the "wiring delay" of the board so that the signals arriving at the DAC end are aligned and strictly synchronized.
- With the precise control of FPGA-Master 2.0, 128 independent PWM-DACs operate in FIR mode and combine to form L+, L-, R+, R- outputs. Every DAC data bit undergoes careful delay and alignment through rigorous compensation.
Discrete PWM-DAC
After the FPGA generates the PWM signal, it arrives the discrete PWM-DAC for decoding. Employing 16 sets of an 8E PWM-DAC cascade. There are 4 sets per L+, L-, R+, R-, which is 32 PWM-DACs. The quantity of the DAC exceeds that of other portable discrete DACs by more than 6.4 times. With the exceptional combination of precise decoding and a substantial quantity of extremely high-quality DACs a THD+N level of less than 0.0001% is achieved and represents an exceptional performance.
Hardware Analog FIR Filter
With FPGA-Master2.0’s picosecond-level precise control, 128 independent PWM-DACs operate in FIR mode and combine to form L+, L-, R+, R- outputs. Each channel has 32 PWM-DACs operating in "delay parallel" mode. This configuration enables the 32 DACs to work together as a hardware analog FIR filter. By averaging the differences between multiple DACs, distortion is minimized, resulting in enhanced sound detail and density.
Super Class A Discrete Amplifier
1125mW+1125mw@32Ω
The D16 utilizes the similar architecture to the DX320MAX, a super Class A discrete AMP circuit. It incorporates 20pcs of Low VCEsat (BISS) dual transistors and boasts an impressive output current capability of up to 2A, resulting in a robust output of 1125mW+1125mW@32Ω.
Cutting Edge Components
- 128pcs low-temperature drift 0.1% high-precision 25ppm thin film resistors.
- 24 position 4 section stepped attenuator with a channel tolerance less than +/-0.1dB.
- Dual Accusilicon ultra-low phase noise femtosecond oscillators, with a noise floor as low as -158dBc/Hz (@1kHz).
- Professional audio DSP chip, theoretical dynamic range up to 192dB, THD+N up to -174dB.
- Ultra-low noise analog power supply with noise as low as 0.6μV.
- 1.3-inch OLED display
Specifications
4.4mm LO
- Output Level:3.3Vrms (DAC Low Gain), 4Vrms (DAC High Gain)
- THD+N:-120.4dB(0.000095%)@1kHz AES17-20K A-wt
- DNR:123dB AES17-20K A-wt
- SNR: 123dB AES17-20K A-wt
- Crosstalk:135dB
- Frequency Response:15Hz-40kHz +/-1dB
3.5mm LO:
- Output Level:1.65Vrms (DAC Low Gain), 2Vrms (DAC High Gain)
- THD+N:-118dB(0.00012%)@1kHz AES17-20K A-wt
- DNR: 120dB AES17-20K A-wt
- SNR: 120dB AES17-20K A-wt
- Crosstalk:133dB
- Frequency Response:15Hz-40kHz +/-1dB
4.4mm PO:
- Output Level:4.2Vrms (AMP L Gain + DAC H gain), 6.8Vrms (AMP H Gain + DAC H gain)
- Output Power:1125mW +1125mW@32ΩTHD+N<0.5%
- THD+N:-117dB(0.00014%)@1kHz AES17-20K A-wt 600Ω Load
- DNR:123dB AES17-20K A-wt
- SNR:123dB AES17-20K A-wt
- Crosstalk:131dB
- Frequency Response:15Hz-40kHz +/-1dB
3.5mm PO:
- Output Level:2.1Vrms (AMP L Gain + DAC H gain), 3.4Vrms (AMP H Gain + DAC H gain)
- Output Power:640mW+640mW@16ΩTHD+N<0.5%
- THD+N:-114dB(0.00019%)@1kHz AES17-20K A-wt 600Ω Load
- DNR:118dB AES17-20K A-wt
- SNR:118dB AES17-20K A-wt
- Crosstalk:130dB
- Frequency Response:15Hz-40kHz +/-1dB
Input Interface:
- USB-C input, supports PCM768kHz/DSD512
- 3.5mm coaxial input, supports PCM768kHz/DoP256
- 3.5mm optical input, supports PCM192kHz/DoP128
Output Interface:
- 4.4mm balanced output
- 3.5mm single-ended output
- 4.4mm LO output
- 3.5mm LO output
Battery and Size
- Charging interface: USB-C (Charge), supports 5V/2A and QC3.0 quick charging
- Charging time: 2.5 hours
- Battery life: 9 hours
- Size: 139mm*82mm*28mm
- Weight: 312g