Grennesa 21 Posted August 29, 2020 Share Posted August 29, 2020 Being based in Melbourne in lockdown for the second time I’ve been building up my home audio system. My listening is entirely digital using Roon. I’m currently using a Oppo 203 (as network player) > Chord Qutest> Anthem MRX 720 ( as pre amp) > Pass Labs x150.5 ( which I added a few months back) . I also used the Pass Labs to drive L & R for a 7.1.2 home theatre setup. My thoughts about continuing to build my 2 channel setup was to add a pre amp. I’ve been eyeing off pass labs pre amp (Xp10 or 12) to use home theatre bypass for the MRX and another lot of inputs for the DAC. However one of the things I’d love to build up to one day is a Chord Hugo TT2 which has a pre amp built in which got me thinking do I need an active pre amp or would a passive one ( if I got a Hugo TT2) give me a better sound (less mucking around with the signal) to just act as an input switcher ? I suppose an active pre amp gives me the option of adding analogue one day. Given that listening To anything is out of the question for who knows how long, I’m just wondering what people’s experience and thoughts might be? cheers Link to post Share on other sites
tripitaka 332 Posted August 29, 2020 Share Posted August 29, 2020 (edited) you'll get equally adamant answers on both opposing sides, so good luck making sense of it all 🤣🤣 edit: tho if ur endgame is actually using the Hugo as the pre then I suppose u would want to spend as little as possible = passive...? 🤣 Edited August 29, 2020 by tripitaka Link to post Share on other sites
Irek 565 Posted August 29, 2020 Share Posted August 29, 2020 You can try connecting laptop (USB connection + foobar2000) to Chord Qutest and than the DAC directly to power amp. 1 Link to post Share on other sites
Grennesa 21 Posted August 29, 2020 Author Share Posted August 29, 2020 27 minutes ago, Irek said: You can try connecting laptop (USB connection + foobar2000) to Chord Qutest and than the DAC directly to power amp. My understanding is it’s not a good idea to connect both the RCA and XLR inputs of the pass labs amp, hence the need for a pre amp to combine the DAC and AV receiver outputs. While I think the Anthem sounds great I’m wondering if a dedicated pre amp would be better. Link to post Share on other sites
Bunno77 1,372 Posted August 29, 2020 Share Posted August 29, 2020 5 minutes ago, Grennesa said: My understanding is it’s not a good idea to connect both the RCA and XLR inputs of the pass labs amp, hence the need for a pre amp to combine the DAC and AV receiver outputs. While I think the Anthem sounds great I’m wondering if a dedicated pre amp would be better. Pretty sure what he means is you can trial it now by connecting your DAC direct to amp and disconnect Anthem. You can use software on a PC to control volume. Will give you an idea of DAC direct. Link to post Share on other sites
Grennesa 21 Posted August 29, 2020 Author Share Posted August 29, 2020 Thanks guys I’ll give this a go tomorrow. I suppose plugging the DAC straight in to the amp approximates a passive pre amp? Of which there don’t seem to be a whole heap of passive pre amps pop up when I search for them? 1 Link to post Share on other sites
Bunno77 1,372 Posted August 29, 2020 Share Posted August 29, 2020 Just be careful and make sure the volume is turned down before you press play. Does the Oppo 203 have volume control? You could try that too and will be a bit closer to volume control inbuilt to a DAC but guessing the Qutest sounds a bit better already. These methods are a little different to a passive pre as it is digital volume control but will be a more 'direct' path I guess. I have always preferred active preamps but I have not tried all DACs either. I don't have much experience with passives 1 Link to post Share on other sites
misternavi 1,201 Posted August 29, 2020 Share Posted August 29, 2020 5 hours ago, Grennesa said: I’d love to build up to one day is a Chord Hugo TT2 If you are going the TT2 bypass another component (active or passive pre) for a simpler set up. Passive pre: they are good - cheaper to build one yourself a 10K stepped ladder attenuator for $60 AUD is surprisingly GREAT and would work well with you pass power amp keep your cables short as possible and they can work better than a active one. I think there is a Townshend Allegri for sale of eBay that uses Autoformers. Autoformers is the best passive but very hard to get right I have the old inTact audio autoformers and I can't seem to stack the auto former core right The new design is meant to be a lot easier to use. If you can get your hands on a DIY Pass B1 buffer they work better than just a passive pre. (PM me) Link to post Share on other sites
Bunno77 1,372 Posted September 2, 2020 Share Posted September 2, 2020 How did you get on? Link to post Share on other sites
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