Massdrop x Alex Cavalli Tube Hybrid Amp (CTH)
Massdrop x Alex Cavalli Tube Hybrid Amp (CTH)
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Product Description
Built from the ground up by Alex Cavalli, a legend in the world of headphone amps, this hybrid amp combines a solid state section, a tube amp section, and an entirely new circuit design. It delivers the current required by planar magnetics, along with the voltage drive that dynamic headphones need to perform their best Read More

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mbvjmc
130
Sep 3, 2020
After a little more than one month in (received it from Drop in the last week of July brand new), hello scratchy pot. I love everything about this amp, but the scratchy pot is starting to become a pain in the ass. Picture below is the CTH driving my Hifiman HE-500.
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(Edited)
rastus
1120
Sep 3, 2020
How does that interesting tube roll sound?
mbvjmc
130
Sep 3, 2020
The 6C8G's are probably the tubiest that I've tried so far compared to the 6922's (stock) and the 6DJ8's (Amperex Bugle Boys). I had a few 6C8G's that I used with my Darkvoice 336SE. With these style of tubes, I prefer the 6F8G's to the 6C8G's on my DV due to the latter's higher gain. The higher gain of the 6C8G is not an issue with the CTH. Also, the 6F8G cannot be used on this amp since it draws double the current more than the CTH is spec'd to handle. Thus, using a 6F8G on the CTH will likely damage the amp. Anyways, back to my impressions, the Tung-Sol's (pictured, could be a rebrand) throws the widest soundstage, great depth and imaging (very holographic), and a touch of warmth. For me, it is best paired with my HD6XX and HE-500 (also pictured with a modded headband) and is probably my favorite 6C8G since the HE-500 is one of my favorite cans and it gets a lot of headtime these days. Ken-Rads are slightly warmer, smaller soundstage than the Tung-Sols, better bass than the Tung-Sol's (I think), frequency response is really nicely coherent from the bass to the treble, I typically use these with my HD800S and Arya. RCA clear glass, meatball logo is on the dry side and is not really used much. National Union 6C8G's are a little on the dull side with its recessed treble. I tried it with the HD6XX briefly and didn't like the combo. I have yet to try the National Unions with brighter cans like my Arya's or HD800S. But yeah, I prefer the 6C8G's to the 6922 (stock) and the 6DJ8 right now.
(Edited)
adog_beer92
4
Aug 19, 2020
Can I plug single-ended headphones into this? I'm a noob to the audophile world.
adog_beer92
4
Aug 19, 2020
Also, what about unbalanced headphones? Or are unbalanced the same as single-ended?
Stanima
3
Aug 20, 2020
1st question: Yes, the 1/4" hole is unbalanced. 2nd Question: Unbalanced is the same as single ended, yes. Since this is a hybrid tube, you can plug pretty much anything into it!
TarasT
8
Aug 17, 2020
It really is a hybrid. RCA input and balanced output.
AngryTank
7
Sep 14, 2020
Just an adapter not actually balanced.
EC2019
7
Jul 31, 2020
who know where can we change a new potentiometer or better one?
EC2019
7
Jul 25, 2020
why there is a big noise when I turn the knob?
lalawilson
16
Jul 17, 2020
Hi there, I plugged a pair of hifiman ananda's in and after 5 seconds it crackles and music stops and light turns from blue to red. after unplugging light turns back blue, it works fine with the 6xx, anyone experienced this? is it because the ananda's have much lower output impedance?
rustyjus
30
Jul 20, 2020
I had this problem too... it turns out it was the 1/4 inch headphone connector ... try unplugging and plugging a few times and try and get a good connection.. if it doesn't it will short the amp when you at average to high volumes. hope that helps.
VictorKap
8
Jun 10, 2020
Is it normal to have noise to when changing volume. I have in my right driver on my massdrop cavalli tube hybrid
quicklytoo4
182
Jun 16, 2020
cleaned my volume knob out with some electrical component cleaner so far no more static when changing volume (make sure you discharge it first and let it dry for a bit) $12 for a can from wd40 on amazon
Cen0byte
1
May 12, 2020
Hello there!
I have a ifi ZEN DAC with DT1770's but i need more power (i play electronic drums) and i want to get an extra amp that will drive my 1770's. I'm not into tech stuff, but would you recommend this amp for my current setup?
(Edited)
Alltheheadphones
36
Jun 17, 2020
I mean given they have the Tesla driver this might cut it but I mean it's what? 1W into 50 ohm and your cans are 250 but an efficient 250 so Id say yeah, though considering those are bass canons already a tube might not be ideal or noticeable?
rastus
1120
Sep 20, 2020
The THX has the OompH you need.
file1man
4
Apr 29, 2020
$175 april 28 2020, only rca in, no xlr in, not balanced, xlr out only for convenience
(Edited)
verifonix
939
Apr 20, 2020
Wish this had balanced inputs
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