2SC4883 and 2SA1859 are excellent part for VAS stage unfortunately they are hitting EOL
2SA1859 ｜Sanken Electric
Very Linear and very low COB value.
Most importantly very fast!!
Well it seems not many good VAS transistor are left.
2SA1859 ｜Sanken Electric
Very Linear and very low COB value.
Most importantly very fast!!
Well it seems not many good VAS transistor are left.
I think that 2SC4883/2SA1859 was better as driver, than VAS. I use KSC3503/KSA1381 as VAS.
Anyway the 4883/1859 pair was the last excellent driver. Now we have only the MJE1503x range, which are slow, and have high internal capacitance, or Toshiba TTC011B/TTA006B, which are a bit weak.
Anyway the 4883/1859 pair was the last excellent driver. Now we have only the MJE1503x range, which are slow, and have high internal capacitance, or Toshiba TTC011B/TTA006B, which are a bit weak.
"2SC2837/2SA1186 and 2SC6145/2SA2223" have amazing specs.
Hope Sanken will provide better transistor in future otherwise they are out of their mind.
Hope Sanken will provide better transistor in future otherwise they are out of their mind.
Linear audio is not a big business any more 🙁
I see D'Agostino replace the Sanken outputs to Onsemi in his new generation Progression amplifier.
Toshiba have TTA004B and TTC004B is still good enough for 80W amp, what i target personally.
I will stop making amp if I have to move On semi Output unless they improve those MJ series not so linear thingies
VAS: Fairchild KSC3503/KSA1381
Driver : Toshiba TTA004B/TTC004B
Output: Toshiba 2SC5200/2SA1943
Kinda a sad honestly , Good Sanken transistor going away
I will stop making amp if I have to move On semi Output unless they improve those MJ series not so linear thingies
VAS: Fairchild KSC3503/KSA1381
Driver : Toshiba TTA004B/TTC004B
Output: Toshiba 2SC5200/2SA1943
Kinda a sad honestly , Good Sanken transistor going away
I have a bag of about 40 NOS Toshiba 2SA1837. They are perhaps one of the best audio driver transistors ever made. Also gone the way of the dodo.
I am making a conspiracy theory , this is agenda by big corporation to kill Class AB to move us to Class D.
Well well that's a joke , hope Sanken/Onsemi/Toshiba doesn't takes it seriously.
@xrk971 Hi X , how will you compare 2SA1837 with TTA004?
Well well that's a joke , hope Sanken/Onsemi/Toshiba doesn't takes it seriously.
@xrk971 Hi X , how will you compare 2SA1837 with TTA004?
TTC and TTA means not made in Japan , Coming from Toshiba contractor in China
Sound may not be same
Sound may not be same
I bought 200 of each from Digikey, several years ago whe I realized that the **** was hitting the fan WRT driver transistors. The Sanyo parts acquired by ON soon followed. Lifetime quantities now in my inventory.
It’s no joke. But Q is playing a joke on all of us “Good-bye Jean-Luc, all good transistors must come to an end”. When the pro audio industry finally abandons all class B on favor of D, at all power and price levels, even the ON MJ’s will dry up (and go thru the roof first). Anything “consumer” will go to chip amps as smaller and cheaper is the rule of the day. Anyone interested in high performance linear amplifiers should have already been buying up what they anticipate needing for the next few decades. I suspect that in 10 years most of it will be gone. I There may be additional ripple effects - even things like off the shelf transformers might start becoming unobtainium. When that happens you may want a stockpile of magnet wire and cores on hand unless you’re really comfortable building off-line SMPS’s or can afford to drop a few hundred on good reliable industrial or hospital-grade ones every time you need a power supply for something.