WatCult 0 Report post Posted December 13, 2007 iBasso portable DAC/AMP combo D1 is a high performance mobile audio solution. It is a Self powered DAC and Hi-Definition headphone amplifier with many input options, which includes digital inputs from optical, coaxial, USB, and analog input from AUX IN/OUT. It not only works as DAC/AMP combo, but also works as a stand-alone AMP, DAC, or USB soundcard. The DAC function in the small D1 is as good as some full size DAC. D1 has PCM2906 made by Texas Instruments to convert USB into S/PDIF signal. It uses CS8416 as a DA-receiver chip, which is known as a best DA-receiver chip, and has sampling rate from 32 to 192 KHz ability. The D/A chip is CS4398, to convert the signal to analog signal, up to 24bit/192KHz. It is Cirrus Logic's top of the line product and used in lot of high end equipments. The USB-DAC function in D1 is standout. It is a perfect gift for your computer. In the amplification part, D1 has op LT1364 + BUF two LMH6634 structure to ensure high quality music playback with 6dB gain. Also, there is DIP sockets design for opamp rolling. D1 has its dedicated MCU (Micro Controller Unit) to manager its inputs, outputs, and functions. This is an innovation on Portable DAC or Amp device. When D1 is turned on, the MCU will automatically search the inputs one by one, in sequence of (1st optical, 2nd coaxial, 3rd USB, and 4th AUX IN/OUT). Then, let the locked inputting signal goes to the chips for decoding or amplification, and the MCU will turn into sleep status at the same time. Benefit from the MCU, the port AUX IN/OUT on the front panel can have multi-function. When there is S/PDIF signal inputting, this port is Line Out, otherwise, it is Line In. Other than the DAC and AMP design, D1 still has many standout features. D1 has two built-in 2000mAh rechargeable Li-ion batteries. Even for the high power consumption DAC and AMP design, D1 still can work approximate to 20 hours for the combo, or 40 hours for the stand-alone amplification. D1 has built-in current and charge management chip to protect batteries, and have fast charger ability. Only 5 hours is needed to charge the 2000 mAh batteries. Low voltage indicator technology, power lamp will flash when the battery needs to be charged. Also, D1 has high quality aluminum case with 4mm thick front panel, countersinking, and laser printing. The following are some main specifications of D1 version 2. - PCM2906, convert USB into a S/PDIF signal - CS8416, DA-receiver chip - CS4398, D/A chip, one of Cirrus Logic's Flagship Chips - OP+BUF structure for amplification, LT1364+Two LMH6643 - Dedicated MCU (Micro Controller Unit) to manager inputs, outputs, and functions. - Flexible input and output compatibility. It has USB, optical, coaxial, stereo input, line out, and stereo output - Works as a combo or a stand-alone AMP, DAC, USB soundcard - Built-in two 2A rechargeable Li-ion batteries, plays up to 40 hours (40 hrs for AMP, or 20hrs for combo) - Measures 78*32*120mm, and weights only 320g Comes with: genuine leather case, high quality optical cable, USB cable, coaxial cable, AC adapter (110V~240V). This is the new version of D1. iBasso has changed the L/R opamp to LT1364, and BUF is LMH6643. Also, iBasso uses the LTC6241 to be the LPF of DAC. This combination has greater output power and less THD. In sum, the sound is better than before. Review jamato8 review @ Headfi Skylab review @ Headfi Singapore Retail Price: $385 (increased because new version and new pricing from iBasso) Current MO Price: $355 if we are able to hit 10 orders. ETA: Before X'mas One year Local warranty from Stereo Electronics for the D1 collected in this MO. So if you are interested, please put down your name in the list below iBasso D1: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. I will need all of you to put in a deposit of $100 and the rest COD when the unit arrived. Deposit collection will begin once the first 10 orders are filled. Collection will be @ Stereo upon confirmation of the stock arrival. Will update on the date of collection. Share this post Link to post Share on other sites
zeromeansnothing 0 Report post Posted December 13, 2007 will there be any freebies like interconnect like the last MO?? Share this post Link to post Share on other sites
WatCult 0 Report post Posted December 13, 2007 (edited) will there be any freebies like interconnect like the last MO?? There won't be any freebies this time round since it is a one-off thing by Aron who specially made them for the people that joined the first MO. Plus i am trying to keep the price down due to the increased price by iBasso. Edited December 13, 2007 by WatCult Share this post Link to post Share on other sites
WatCult 0 Report post Posted January 9, 2008 (edited) If anyone is interested, there will be a small meeting for iBasso D1 owner at NUS BTC. http://www.sgheadphones.net/index.php?showtopic=8093&st=60 Checking out some opamp configurations for the D1. Edited January 9, 2008 by WatCult Share this post Link to post Share on other sites
