Gamma-2 (γ2) DAC Thread

[Kibble Fat]

Sorry to interject, but does anyone have a (6) spare polypropylene film capacitors (100pF, 100V)?  Name your price!
 
This would help me finish my gamma-2 a month sooner
 

 

[amb]

Kibble Fat, try Mouser 505-FKP2100/1000/5.

 

[MisterX]

You could also try Mouser part numbers:
80-PFR5101J400J11L4 & 80-PFR5221J400J11L4

 

[Kibble Fat]

Well then, assuming nothing is back-ordered at AMB, here are all 4 items holding up my Mouser order.  Since I couldn’t find a suitable replacement for the 22K resistors, I guess I’ll have to make a separate order from Digi-Key.

(6) 505-FKP2100/100/2.5
OR 505-FKP2100/1000/5, 80-PFR5101J400J11L4 & 80-PFR5221J400J11L4

(1) 595-TPS79333DBVR

(1) 595-OPA2365AID

(10) 270-22K-RC
I couldn’t find a suitable replacement.  ¼ watt wouldn’t fit, would it?

Thanks for the help.  I can’t say this is the last you will hear from me in this thread

 

[amb]

Quote:

(1) 595-TPS79333DBVR

 
Any of these would do.
 
Quote:

(1) 595-OPA2365AID

 
Mouser shows that they will be in stock in about one week, so you could order now and have them hold the entire order until all back-ordered parts arrive.
 
Quote:

(10) 270-22K-RC
I couldn’t find a suitable replacement.  ¼ watt wouldn’t fit, would it?

 
Most ¼ watt wouldn’t fit. Try this one: 71-RN50C2212F

 

[midoo1990]

sorry if this has been answered before,but are all the parts available at amb shop?i looked at the part lists and wrote down what i will need,but apparently not all available at the shop.
i was looking forward to build the mini3 first and then the y2 because its more complex but i am a bit confused by all the parts and i cant get them from many online retailers because customs will kill me.
 
is there anyone that offer it as a whole kit?
 
sorry if i missed the answer of this question somewhere.

 

[amb]

Quote:

is there anyone that offer it as a whole kit?

No.

 

[Kibble Fat]

Thanks for the help Ti!  I bought (10) 1%tol 22K resistors on ebay for a dollar.  Shipping was only a couple dollars + change.  Now I just have to wait for paypal money to arrive...

 

[i_djoel2000]

anyone can help me? i just bought gamma1 full config, and it is said to be easily upgradable to gamma2?
 
what other parts do i have to buy to build gamma2? as for the casing, i think i will just drill the old gamma1 full config case as it already fits the gamma2 enclosure 

 

[xnor]

@i_djoel2000: http://amb.org

 

[i_djoel2000]

Quote:

@i_djoel2000: http://amb.org

found it. i was not searching it thoroughly. thanx! 

 

[K3cT]

I haven't posted here in a while but has anyone here tried to run the C20 and C26 positions without the film bypass? If the 'lytic is of high enough quality, don't you guys think it will be better?
 
Gah, I'm bordering on OCD already I know.

 

[QRomo]

I had some extra Blackgate NX's I ordered for whenever I get around to doing a diyMod that I used in C20 and C26. I've omitted the bypass caps for now as I've read some people suggest that the BGs don't need them (some even said their BGs sounded worse when bypassed).  I can't really offer any impressions, though, as I haven't had a chance to do any critical listening.  I'm just finishing off an amp to pair with the γ2 and still have to get my hands a nice set of full size cans.

 

[TBomb06]

I have a couple of questions regarding the technical capability and sound signature of the various chips used in the y2 compared to my current DAC, a Musiland MD-10. I am not asking for a "which is better" comparison or anything like that, as I know that AMB's projects are all top notch and easily compete with off-the-shelf products that cost several times as much. I am more interested in what is to be gained or lost if I were to sell the MD-10 and build a y2. For what it's worth, I primarily use optical out from my computer to the Musiland, and then use RCAs to connect to a Millett Hybrid MOSFET Max feeding Grado SR225s. According to another thread I found here, the chips used in the MD-10 are:
 
DAC: Cirrus CS4398
Op-amp: Analog Devices OP275
 
From what I have gathered, the Wolfson DAC and Burr-Brown upsampling chips used in the y2 are pretty much the best thing going as far as DACs are concerned. I haven't seen much about the Cirrus. So, does anyone have any thoughts?

 

[Beefy]

Quote:

So, does anyone have any thoughts?

Only that I really enjoy my y2 into a MiniMax as my work setup.