Cloud 0 Report post Posted November 19, 2007 oic pardon my ignorance Share this post Link to post Share on other sites
WatCult 0 Report post Posted November 19, 2007 (edited) D2 seems to be iBasso D1 lite. Purely USB input without the extra input connectors ... coaxial, SPDIF.etc Edited November 21, 2007 by WatCult Share this post Link to post Share on other sites
mamboman 0 Report post Posted November 20, 2007 PPkiller: Check with you.. what is the stock opamp inside your iBasso D1? Have you tried the LMH6643 as buffer and the LTC6241HV for the L/R? Mine came with 6234 L/R opamps and 5532 buffers. Share this post Link to post Share on other sites
PPkiller 0 Report post Posted November 21, 2007 i just compared 6234 and 8656... 8656 has better treble extension... while 6234 sounds round(warm?)... i prefer the bass from 8656.... Share this post Link to post Share on other sites
PPkiller 0 Report post Posted November 21, 2007 6234 has less detail as well... Share this post Link to post Share on other sites
mamboman 0 Report post Posted November 21, 2007 I prefer the treble and bass of the OPA2111 for the LR and 6241HV for the mids. The 8656 sounds really good on the DAC too. Tried it outputted to a Move... very sweet. But definitely not portable Share this post Link to post Share on other sites
PPkiller 0 Report post Posted November 21, 2007 shall we have a little meet to hear the sounds from the D1s that we have? how about mid dec so that there's sufficient burn-in time for the D1s? Share this post Link to post Share on other sites
Northern Oak 0 Report post Posted November 21, 2007 (edited) Probably chip in a bit with something slightly off topic. If you are using OPA627, look for Carlosfm's tip on how to decouple the 627s. You can find that at diyhifi.org. I recall having a small decoupling MKP cap between V+ and V- and then decoupling between V+ & Gnd and V- & Gnd. The important thing to note is to keep the wire leads of the caps as close to the 627 pins as possible. I hear significant differences doing so for the OPA627. Edited November 21, 2007 by Northern Oak Share this post Link to post Share on other sites
PPkiller 0 Report post Posted November 21, 2007 (edited) is this the thread? http://www.diyaudio.com/forums/showthread/t-16080.html http://www.diyaudio.com/forums/showthread/t-55039.html this seems to be out of reach to me(can someone "decode" it? i'm like an alien to it.. lolz.. )... Edited November 21, 2007 by PPkiller Share this post Link to post Share on other sites
PPkiller 0 Report post Posted November 21, 2007 hmm... let me guess.. is the mod meant to improve the powersupply to the opamp? Share this post Link to post Share on other sites
mamboman 0 Report post Posted November 22, 2007 I thought grounding will reduce hissing? Why remove the grounding? Share this post Link to post Share on other sites
PPkiller 0 Report post Posted November 25, 2007 guess i'm gonna do a bg mod soon... mamboman and watcult... which phones are you useing with D1? Share this post Link to post Share on other sites
WatCult 0 Report post Posted November 25, 2007 Currently using Audio Technica M50 with my D1. What is the big mod you are planning to do? Share this post Link to post Share on other sites
PPkiller 0 Report post Posted November 25, 2007 bg mod = blackgate mod... think changing 7 caps to blackgate.. Share this post Link to post Share on other sites
mamboman 0 Report post Posted November 26, 2007 guess i'm gonna do a bg mod soon... mamboman and watcult... which phones are you useing with D1? I am using with the following : IEMS : UM1 UM2 E4c E500PTH SF3 SF5Pro TF10Pro Cans : DT770/250 2005 DT990/250 2005 AKG K701 MS2 Share this post Link to post Share on other sites
