HFIDIY Mini PCM1793 DAC

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HFIDIY Mini PCM1793 DAC
Topic Started: 5 Jul 2009, 02:28 PM (2,198 Views)
ahdui	5 Jul 2009, 02:28 PM Post #1
aux! Posts: 5,256 Group: Administrator Member #1 Joined: 15 October 2006	- Made with high quality component: Nichicon and WIMA capacitors - Main DAC chip is Burr-Brown PCM1793 with: -> 24bit/192kHz Sampling Advanced Segment Audio Stereo DAC -> Dynamic Range: 113 dB and THD+N: 0.001% -> 8x Oversampling Digital Filter - Digital input receiver chip DIR9001 with: -> This chip has better sound quality than the popular CS8412/4/6 commonly used in other DACs. It can play sound with much more detail and accuracy. - Digital Coaxial/Optical Toslink input, RCA analog output - Special design short signal path on a double side gold coated PCB with high quality soldering. - Dimension: 105mm70mm25mm Build Quality Nice casing which weighs rather light and I like the smooth borders. But I do not like the screws used. The PCB is nicely made and the components are placed in a nice grouping. Sound Quality Very open and dynamic sounding. Beats almost all DAC I've tried except for Piccolo DAC. However, it is pretty near piccolo's standard. It has a passive sound signature.The PRaT seems to slow down when you are listening to slow songs but the PRaT is nicely presented during nromal or fast paced music. The DAC's strongest point is the details. I could feel the micro details which I can't detect while using other DACs. Bass is very clean, doesn't spread out and it is just there.
	Transportable: iRiver h120(2300mAh)→Sysconcept Optical Cable→AOS Electornics Co. Piccolo DAC→ahdui's CryoFreeze™ TCu IC→ahdui's Enfo PA-1→Custom Shure SE530 Backup: AMB y-1 DAC (MisterX Mod) Cycling: Sansa Clip 4GB→Philips SHS3200 Earhooks Portable: Rio Karma→UltimateEars Super.Fi 5eb Backup Rig: RedWineAudio 40GB iPod Photo→ahdui's CryoFreeze™ RBT IC→iBasso P3 Heron(ahdui Mod) →Custom Shure SE530 Home: "Upgrading In Progress"→Alessandro MS Pro/JVC HP-DX1000 Desktop: PC→Belden 1505F→CityPulse DAC 7.2x II→Belden 89207→KRK Rokit Powered 5


ahdui	5 Jul 2009, 03:58 PM Post #2
aux! Posts: 5,256 Group: Administrator Member #1 Joined: 15 October 2006	ahdui's Modification v1 - Swapped the op-amp inside from OPA2134 to AD8066 - Changed all the signal path op-amps from Muse to Pannasonic (100uF 16v) - tried to change the Power Path's Nichicon to Pannasonic (220uF 50v) but I failed. The Pannasonic capacitor is too tall, couldn't close the case. Sound Quality The first thing I realized is that the music suddenly became very engaging and opens up even more. There is also a drastic improvement in the airy-ness. The speed improved tremendously. Even with slow music, it doesn't slow down. It's a regret that I couldn't replace the Power Path's capacitor else I'm pretty sure the sound quality could be even better.
	Transportable: iRiver h120(2300mAh)→Sysconcept Optical Cable→AOS Electornics Co. Piccolo DAC→ahdui's CryoFreeze™ TCu IC→ahdui's Enfo PA-1→Custom Shure SE530 Backup: AMB y-1 DAC (MisterX Mod) Cycling: Sansa Clip 4GB→Philips SHS3200 Earhooks Portable: Rio Karma→UltimateEars Super.Fi 5eb Backup Rig: RedWineAudio 40GB iPod Photo→ahdui's CryoFreeze™ RBT IC→iBasso P3 Heron(ahdui Mod) →Custom Shure SE530 Home: "Upgrading In Progress"→Alessandro MS Pro/JVC HP-DX1000 Desktop: PC→Belden 1505F→CityPulse DAC 7.2x II→Belden 89207→KRK Rokit Powered 5


wsatia	5 Jul 2009, 10:21 PM Post #3
Posts: 32 Group: Members Member #2,128 Joined: 4 March 2009	Ooh where did you get this? And how much is it!



theory_87	5 Jul 2009, 11:02 PM Post #4
I Need More Money To Spend Posts: 951 Group: Members Member #14 Joined: 15 October 2006	How does it sound compare to y-1?
	Source: Sansa Clip x 2 \| iAudio U2 \| Rio Karma \| iPod Nano 4GB Gen 1 x 2 \| iMod 60GB iPod Photo \| iPod Gen 5.5 x 2 \| iRiver H140 \| HP Pavilion dv6121TX Amp: Xin SuperMicro IV \| theory_87's DPA1 \| iBasso D10 Modded \| iBasso fi.Quest \| Onkyo TX-SV919THX \| Yaqin CD1 Tube Buffer w Mullard E88CC \| AMB CK²III Heaphone/IEM/Speaker: CrossRoad MylarOne X3 \| SoundMagic PL30 \| Modded Altec Lasing im716 \| Fischer Audio Eterna w modified UM56 \| Custom Ultimate Ears® super.fi 5 Extended Bass™ \| Custom Ultimate Ears® #4/1000 triple.fi 10 Pro™ + mid driver\| ACS T1 \| JBL PS100 & Yamaha VS10M Others: xxx red series 3.5mm & RCA IC \| DIY HGA 3.5mm IC \| DIY Jena Cryo 3.5mm IC \| DIY ALO SXC 3.5mm IC \| Custom Optical IC \| Ridox contact protector/enhancer \| DeoxIT ProGOLD \| Mapleshade SilClear


ahdui	6 Jul 2009, 08:59 AM Post #5
aux! Posts: 5,256 Group: Administrator Member #1 Joined: 15 October 2006	This set belongs to flu_fighter. It is easily available in websites such as ebay. As for how it sounds as compared to y-1... I do not compare both of them because y-1 is just a 5v DAC while the PCM1793 is a 9-15v DAC. Obviously, the PCM1793 DAC wins hands down due to the fact that it has no limitations in both space and power. But 1 thing for sure, the y-1 is the sure winner for the 5v DAC region.
	Transportable: iRiver h120(2300mAh)→Sysconcept Optical Cable→AOS Electornics Co. Piccolo DAC→ahdui's CryoFreeze™ TCu IC→ahdui's Enfo PA-1→Custom Shure SE530 Backup: AMB y-1 DAC (MisterX Mod) Cycling: Sansa Clip 4GB→Philips SHS3200 Earhooks Portable: Rio Karma→UltimateEars Super.Fi 5eb Backup Rig: RedWineAudio 40GB iPod Photo→ahdui's CryoFreeze™ RBT IC→iBasso P3 Heron(ahdui Mod) →Custom Shure SE530 Home: "Upgrading In Progress"→Alessandro MS Pro/JVC HP-DX1000 Desktop: PC→Belden 1505F→CityPulse DAC 7.2x II→Belden 89207→KRK Rokit Powered 5


flu_fighter	6 Jul 2009, 09:41 AM Post #6
TERROR.DEATH.WORSHIP!!! Posts: 1,612 Group: Member Member #52 Joined: 17 October 2006	wsatia 5 Jul 2009, 10:21 PM Ooh where did you get this? And how much is it! You can get this from eBay. There are several sellers. It should cost around $110-$120 region including shipping. As for the power source you can use the Tekkeon/ Arigo AMP-60 Mobile poweor the 12v lithium battery for cctv cameras which can be easily sourced from eBay. That should set you back about $30 including shipping. The Tekkeon/ Arigo AMP-60 Mobile power costs more obviously as it ihas higher storage capacity and you can change the voltage supply.
	Team DT 150 Team Big Mini Team Belden Team Portaphile Team Tekkeon Team "> One Thousand Five Hundred Dollars Only" per Portable Audio Rig Team "SAY NO TO KITCHEN APPLIANCES" Klub Karma MySpace


wsatia	6 Jul 2009, 12:02 PM Post #7
Posts: 32 Group: Members Member #2,128 Joined: 4 March 2009	Ooh right, thanks guys. I'll go check it out!



flu_fighter	7 Jul 2009, 10:01 AM Post #8
TERROR.DEATH.WORSHIP!!! Posts: 1,612 Group: Member Member #52 Joined: 17 October 2006	wsatia 6 Jul 2009, 12:02 PM Ooh right, thanks guys. I'll go check it out! You might also want to consider the Hifidiy mini TDA1543 dac as well. This is slightly cheaper, runs on 9v-12v. The casing is the same, but it uses the highly regarded TDA1543 non-oversampling d/a converter. Usually I don't like NOS dacs for compressed music, they tend to sound a bit thin if not properly done. But this set is very well implemented, it has slightly different flavour compared to the Hifidiy mini PCM1793 dac. I tend to go back and forth between these 2 dacs, can't quite decide which one i prefer. The TDA1543 dac is a bit more clinical, but still has a full bodied sound, though not as full bodied as the PCM1793. The mids of the TDA1543 are a bit more airy and the vocals sound sweeter, especially female vocals. So if you are more into vocals, I'd suggest you take the TDA1543, if you are into rock and more impactful music, the PCM1793 is one of the most hard hitting sources I have heard. The PCM1793 is also the bassier of the 2 units. You can have a listen to my 2 sets before you make a choice.
	Team DT 150 Team Big Mini Team Belden Team Portaphile Team Tekkeon Team "> One Thousand Five Hundred Dollars Only" per Portable Audio Rig Team "SAY NO TO KITCHEN APPLIANCES" Klub Karma MySpace


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