I think anything with a chip won't look good PtP unless it's a LM308H or other METAL-CAN type of IC — but that's just my subjective bias.
So for a PtP Dist+/250, I'd go with LM741CH
Even the JRC4558 came in metal cans.
Alas, all the metal-can stuff is getting harder and harder to find.
Here's some of my metal-can notes/findings (cut'n'paste screwed up my formatting and colours, so I started to add it back in but... whatever...):
- LM301AH OPERATIONAL AMPLIFIER 8-PIN METAL CAN
was available from Mammoth, Jameco and ... the Internet.
3080! As used in numerous compressor projects!
OPA512SM opamp 4MHz SGL to-3-8 texas ::
AD536AJHZ Analog Devices ::
DG200AB Vishay Siliconix ::
LM308 (LM308ah) :: RAT
LM
By Erica Synths. A pair of NPN transistors in a TO-5 can, comparable to the LM394 but better matched.
LM301H improved Op-Amp (part of the LM308 grouping
UA741c
LM741 (CA741, CA741C) FUTURLEC
: LM741CH LM741 Operational Amplifier Yes TO-99 $2.30
^GOT ONE FROM JAMECO!
MAA741 Tesla OP Amp Operational Amplifier Metal Can IC 741 LM741 uA741
LM741H — old, noisy compared to TL071, 2 etc AND LM741
MC33171, MC34071 and TLE2141 are good single supply opamps – but are they available in metal can?
CA1558 (METAL CAN)
DUAL OP-AMP off same datasheet as LM741 above
*LF398H : sample & hold circuit!
LF357
LM311-N METAL CAN Voltage Comparator Texas Instruments 8-Pin TO-99 See LMC Package
OP42 :: TO-99-8 JFET analog devices inc
MAA741 (c, kh) Tesla
MAA723
MAB357
OPA2107BM 8 can
OPA111
OPA2111
Burr Brown OPA111BM (UK made) opamp
BURR BROWN SELECTION GUIDE
“OPA2227 is the way to go. Similar sound to OPA2134 but better control in the bass.” [what does better control in the bass mean, though? Tighter? Less of it?]
MPY 100, 534 AND 634
TLE2141
Substitute for JRC4558D (TS-clone)?
www.diystompboxes.com
TSH22 :: boasts of good behavior at the rails, ie, no inversion at saturation. It saturates gracefully.
MC33078 :: a good low noise, low THD+N chip that will probably produce a smoother, more "pristine" sound.
LT1055/1056 H TO-5 : out-of-date package, but maybe some NOS available?
LT1054H Supply Voltage FOR TRANSBOOST, Flabulanche
LME49720
Free Shipping! 1pc LME49720HA dual op amp for upgrading DAC decoder and amp-in Integrated Circuits from Electronic Components & Supplies on Aliexpress.com | Alibaba Group
JRC4557T
RC4558 - and alts to 4558: TL072, NE5532 ('next gen' above the '072), OPA2134 TL072,TL082,NM5532,TL062,LF353, OPA2604, RC4559, TL052
http://www.diystompboxes.com/smfforum/index.php?topic=23373.0
JRC4558D alternatives: “Texas Instruments' RC4558 (sounds very good), and RC4559 (more dist., good), and the NE5532 (sweet & quiet, great). The above are cheap and plentiful. Hi-Fi chips are Burr-Brown OPA2134 and OPA2064, both expensive. TL072, cheap and works also.”
OP275, LF353 and a NTE928M”
“TI RC4558P is a superior part to the JRC chip, smoother and greasier, very sweet sounding. the 4559 is the same with a bit more grind. the OPA2111, OPA2132, and OPA2227/2228s are very good as well, actually just about any burr brown chip is good. The 2111 is linear cmos, one of my favorites.”
LM833 :: Nat semiconductor's basic dual opamp
MC1458
LM118H/883 military temp range and tested equivilant of the LM348 or LM248 metal can IC.
2N4416a metal can version low noise high frequency JFET
LM4562 :: a dual amp available in DIP, Metal Can and SOIC (SMT) packages from Digi-Key for about $5. LM4562 is very good at AC and DC and having wide bandwidth and wide supply range can replace any audio op-amp in the dual package. [For a manufacturer, economies of scale and testing new product etc, financially may not make sense to upgrade to LM4562 on legacy product, but for DIYer why not spend a teensy bit more dough for a better sounding cooler metal can?] LM4562 is the newest audio amp from National Semiconductor (they got awards for it) intended for hi-end audio. It has excellent AC (THD=0.00003% IMD=0.00005%) and DC (0.2uV/degC) specifications. Unity Gain Bandwidth is 55MHz and slew rate is 20V/us. It work from 5V to 36V. Power supply rejection is excellent. It has pretty strong drive (600 Ohm specified). As for the known product - Benchmark DAC1 USB uses it in the output stages replacing previously (DAC1) used NE5532. Replacing all chips in Benchmark is probably too expensive for Benchmark ($5 for LM4562, $0.55 for NE5532) since there is a lot of them (about dozen packages) and NE5532 is very decent in the AC (pretty bad at DC).
LM101, LM108 or LM118
Bi-FET operational amplifiers using a TO-5 include an LF155, LF156, and LF157 to provide another example.
Round style press-fit TO-5 Sockets are available in MIL-DTL-83502/2 with 3, 4, 6, 8 or 10 contacts.
LM158/LM258 / LM358 / LM2904 Low Power Dual Operational Amplifiers
CHECKING
OPA2134 Burr Brown
NE5532
AD8397
OPA2604
RC4559
TL052
OPA627 digikey has it
OPA2111am
IC ua308HC Small Bear
555 righto.com
LF356 (LF155, LF156, LF256, LF257 LF355, LF356, LF357)
SINGLE OP-AMP CHIP see datasheet (same pinout as 741)
LM1458 / LM1558
CA741, CA741C (CAN)
CA1558 (METAL CAN)
Vintage Fairchild 748HC UA748HC Quad Op Amp 1/2" Gold Leads Date Code 1973
LF442
The LF442 dual low power operational amplifiers provide many of the same AC characteristics as the industry stan- dard LM1458 while greatly improving the DC characteristics of the LM1458. The amplifiers have the same bandwidth, slew rate, and gain (10 kΩ load) as the LM1458 and only draw one tenth the supply current of the LM1458. In addition the well matched high voltage JFET input devices of the LF442 reduce the input bias and offset currents by a factor of 10,000 over the LM1458
LM158/LM258/LM358/LM2904 : Low Power Dual Operational Amplifiers (check PDF for exact models in TO-5 pakg)
LT1057 metal can package, replacement for:
“The LT1057 may be inserted directly in LF353, LF412, LF442, TL072, TL082 and OP-215 sockets. The LT1058 plugs into LF347, LF444, TL074 and TL084 sockets. Of course, all standard dual and quad bipolar op amps can also be replaced by these devices.”
SAMPLE & HOLD AMPLIFIERS
LF198H Texas Instruments
LF198H/NOPB Texas Instruments Monolithic Sample and Hold Circuit 8-TO-99 -55 to 125
LF198AH/NOPB Texas Instruments monolithic S&H Circuit 8- TO-99 -55 to 125
LF298H/NOPB Texas Instruments
LF298H Texas Instruments JFET
LF398H Texas Instruments
LF398H/NOPB Texas Instruments
Best 4558 alternatives?
www.diystompboxes.com
I built a modified OS I called the Orange Smoothie. It is very quiet IMO. I tested 8 different opamps in circuit looking at background noise using a Cubase plugin. I wasn't being terribly scientific, but it was a fair comparison. There was a small but notable difference. I tested the RC4558, RC4580, TL072, NE5532, MC1458S, OP275, OPA2604, and OPA2134. 4 opamps showed lower noise floor than the other 4, and within each group, the levels were very close. The winners were the RC4558, RC4580, TL072 and OPA2134. I ended up using the TL072 because it was as quiet as any of them and of the four quietest had the most neutral sound. (Yes - there were notable sonic flavours to the opamps and the OPA2134 had a "hi-fi" character I felt wasn't neutral.) All of these differences were subtle but I could hear and measure them. — GGBB (Gord Tranter Toronto)
In a guitar preamp the LM4562 would not be ideal as it is a Bipolar Opamp and doesn"t have the input impedance needed for a Guitar preamp so a Fet Input opamp like the OPA2134 would be more suitable....
In a Mic preamp I believe a LM4562 would be more suitable because most mics are low impedance and the LM4562 has it"s best noise performance with a Low inpedance input....
Also the LM4562 is a Much more tempermental than the OPA2134 , the LM4562 is more dependant on good layout and good supply bypassing than the OPA2134 ....
It is really Hard to compare and Bipolar and a Fet opamp in the Same application as a Bipolar is generally not a good replacement for a Fet.... — Minion, cowican bay, vancouver island
Is the TL072 the best op amp for "metal zone" distortion?
www.diystompboxes.com
they're not made any more because the fab process is way oudated, but there are still a few stockpiles available a Harris CA3240AE or an Intersil CA3240EZ. NTE also relabels the same chip as NTE7141. These are fully CMOS Op Amps and in a circuit like the Metal Zone really can't get any "metallier"
Don't try this chip in anything but a Metal Zone, tho or you'll be dissapointed. They ruin the transparency of clean boosts and overdrives.
Read details and specs for the Boss MT-2 Metal Zone
www.bossarea.com
TURRET/PtP PROJECTS for METAL CAN OPAMPS:
Basically almost anything that takes a single op-amp or a dual op-amp, for ex:
KLON CENTAUR, minus the charge pump, could be laid out for:
4 x single op-amp OR
2 x dual op-amps OR
1 x dual op-amp and 2 x single op-amps.
COULD ADD the charge pump in a hidden location… damn charge-pumps
It just means that not every circuit gets the op-amp it’s supposed to get, ex:
supposed to get TL072,
substitute a JRC4558 metal can
IN OTHER WORDS, TOO MANY TO LIST HERE! BUILD WHAT YOU WANT/NEED/Have-can-for
- ex ACTIVE BASS BOOST CIRCUIT
- DOD230v2 :: TL022 (replaced by TL072 in turn replaced by LT1057; LM358 comes in Can pkg
- DOD250 :: LM741
-
ETERNITY 1 / V3 / Burst / Black :: LM1458 & LM4562 or RC1458 or OPA2134 or other compatible can
- TS-808 :: RC4558. Other chips for tube screamers:
*new JRC4558D, LM833, RC4558 (various brands), TLC2202, TLC2272, OP275, LT1214
- IC BIG MUFF OP-AMP ’77 :: requires RC4558 & LM741
- Green Monster (LandGraffeW MP) TLC272CP or LF353H
-
Menatone Red Snapper JRC4558D, RC4558P
- MI Audio Crunch Box LM833
- Orange Squeezer/Smoothie 4558
- PRUNES & CUSTARD
- Purple Plexi 800 LM386D
-
RAT w/ land graffe mod LM308
- RIOT / UPROAR JRC4580
- RTO 4558
- RUBY AMP LM386
-
TIMMY CA3240EZ
- TREMBULATOR IC1 JRC4558, IC2 LF351H National Semiconductor, IC3 TL062
-
Zendrive AD712
etc...
Not very organised notes, I know. I hadn't planned on sharing it publicly at the time I was in the shark-frenzy for
TO-5, TO-99 & other metal-can packages.
