
I would not have bothered with the A90D if the X9 had balanced input at the back, it only has RCA, and the K13 only has digital inputs, so using either as pre-amp for a fully balanced chain isn't possible sadly. I know the K15/K17 have a 4.4mm input at the back though which is odd, why not give full XLR or TRRS jacks?? Gotta use a 4.4mm to XLR cable for a balanced input, and of course one isn't in the box.
Using the k15 as only an amp/pre-amp for the warmer seems a bit of a waste when half the cost of it is for the DAC and streaming features![]()
Of course they would, they get more money that wayThat is true,. although Fiio themselves hint at using it that way going by their stock images stacked with the Warmer
But yes, dedicated boxes for each stage is probably the best way to get the most performance for the money.

Fiio has a bunch of new devices coming soon the CEO said that follows in Warmer's footsteps, we already know of one of them, the power amp, and I suspect a dedicated pre/headphones amp is on the cards too. Interestingly Fiio offered me the new JT3/JT7, so I chose the JT7 (planar headphones), as well as the upcoming CD transport which is R2R with build in headphones amp - I didn't care much for that though as have no CDs left lol but it does look cool.
I had some of the cooling pads but not for the hd6xx, wasn't a fan. They feel cool at first, but quickly start to feel very warm compared to other fabrics.
I love that video, always hated the price of the official pads, partly the fact that the only place I can find genuine ones is from Thomann's and the price is just hard to swollow after shipping.
The ZMF one looks good though.
I get the strong impression from using and hearing the A90D that it is the type of amp that can easily gel with everything, the K11 R2R for example has a less wide soundstage and image than the K13, and the Warmer is even wider still and more detailed up top thanks to the layering. All of these differences are transparently presented via the A90D from a DAC only perspective. The X9 from this perspective still retains its sound signature as a pre-amp as, those AKM Velvet chips seem to be distinctly "AKM smooth" - Which I really like and have no issue with, the A90D seems to be similar but applying on top of the signature of the source DAC.Also less cable options for XLR to 4.4mm cables. I had that fun and games when I was looking at the Gremlin balanced-only connections. I do get why you bought an A90D. To be honest I'd never heard of the A90D until you mentioned it the other day. Dangerous though because I then start watching reviews and I'm starting to price it up! Makes sense why you bought it though.
I get the strong impression from using and hearing the A90D that it is the type of amp that can easily gel with everything, the K11 R2R for example has a less wide soundstage and image than the K13, and the Warmer is even wider still and more detailed up top thanks to the layering. All of these differences are transparently presented via the A90D from a DAC only perspective. The X9 from this perspective still retains its sound signature as a pre-amp as, those AKM Velvet chips seem to be distinctly "AKM smooth" - Which I really like and have no issue with, the A90D seems to be similar but applying on top of the signature of the source DAC.
I guess this is expected, the X0 is £100 for a box of many tricks, the A90D is £600 and is dedicated to doing this one trick effortlessly.
Anyone seen any good headphone/earphone deals today?
That's exactly the sort of thing I was looking forDepends if you don't mind using Aliexpress. Just got pair of HiFiMAN Sundaras from China for under £60 delivered during the current sale:
![]()
HIFIMAN SUNDARA Over-Ear Full-Size Planar Magnetic Headphones (Black) with High Fidelity Design Metal Casing - AliExpress 44
Smarter Shopping, Better Living! Aliexpress.comwww.aliexpress.com
A bit of convoluted way to do it.
Use codes GBBF91 or NOVHUKD20,which gets the price down to £103. Pay via Paypal as there is another £7 discount(code refreshes every day at 10am) so down to £96. There is the coins section in the App can give you upto another 40% off dependent on how many coins you have. Plus you get 10% store credit if you join one of the maximum level cashback teams. I had a bunch of credit from a previous purchase.
The Edition XS and Ananda are available for £150 and £175 nominally with codes. But once you start doing the Paypal discounts,coins,etc it will be less than that.
Maybe not for everyone though!

That's exactly the sort of thing I was looking for
Can you elaborate a bit more on the cashback teams bit, is that in the app somewhere?