meomap
Headphoneus Supremus
Tx.I’m not 100% sure but try Basil Audio
Tx.I’m not 100% sure but try Basil Audio
I never stick with stock tubes!!! I always listen first, formulate impressions with the stock tubes, however like any good cook, I make the recipe a little different from the original to make the final dish my own flavor. Waiting on some amprex tubes now. If they give me what I am looking for, then I will roll the output tubes as well.@MRphotography What tubes are you rolling with this beauty? I can't imagine you're sticking with the stock tubes
TSAVJason
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I have a Stealth/MHA200 combo that sounds fantastic. I don't hear any of the lack of slam/dynamics that others have complained about, which I'll chalk up to trying to power the Stealth with anemic amps. The Stealth sounds just as vibrant as my Utopia.Ether 2's impedance is 24, and Ether C Flow is approx 19. Both values are lower than the impedance ranges on the MHA200. You're saying they still sound great? That is reassuring.
I have DCA stealth (impedance is 23 ohms) coming in and am hoping this pairing is heaven and brings something that the TT2/M-scaler or Formula S/Powerman can't provide.
I'm getting a lot of RFI from my modem. I tried putting the tube cage back on, and loosely wrapping the tubes in aluminum foil. Neither method worked. I had to turn off my wifi router and put my phone on airplane mode, and that eliminated the noise.
How many hours are recommended for burn-in for both the MHA and NOS tubes in general to achieve more mature sound?
TSAVJason
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Mine was close to my modem and streamer and dac with no rfi issues whatsoever, I would suspect based on that, that you have a defective unit. Exchange itI'm getting a lot of RFI from my modem. I tried putting the tube cage back on, and loosely wrapping the tubes in aluminum foil. Neither method worked. I had to turn off my wifi router and put my phone on airplane mode, and that eliminated the noise.
How many hours are recommended for burn-in for both the MHA and NOS tubes in general to achieve more mature sound?
Mine was close to my modem and streamer and dac with no rfi issues whatsoever, I would suspect based on that, that you have a defective unit. Exchange it
TSAVJason
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Mine was close to my modem and streamer and dac with no rfi issues whatsoever, I would suspect based on that, that you have a defective unit. Exchange it
I’m not a tech but if he’s getting major rfi audible interference from a device that I can use beside my modem and other gear and cell phone without any then to me his unit is defective. I couldn’t really say specifically in what way but the mcintosh tech who opens it up will find out. I had a wa33 that was like that but they all were so it was no surprise and obviously not a defect. This is the only report of rfi noise so the likelihood is that his unit is defectiveI’d like to understand your “defective” conclusion. Please explain at your leisure
Recently installed some NOS RCA tubes on my unit and haven't experienced any sort of noise. I do have all my equipment in a separate room from everything else, did have a friend who experienced RFI from a modem/router, but only when it was extremely close to the amplifier. How far away is your setup from other frequency emitting devices?I am using vintage tubes and microphonics may be an issue that the stock tubes don't have. I may try also cleaning the pins on these tubes.
I'll try the stock tubes tonight and see if I can troubleshoot a bit more. Turning off the wifi is easy enough though inconvenient