SPARKOS LABS SS3602 Dual Discrete OPA DIP8 (Unit)

SPARKOS LABS SS3602 Dual Discrete OPA DIP8 (Unit)
SparkoS Labs has created a range of discrete DIP8-mounted PDOs optimized to deliver excellent audio performance. They will allow you to replace less powerful AOP or quite simply to obtain a different sound.

Average votes for this product
4.8 / 5

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Shipping date: 26-11-2020.

Orders placed before 11AM (GMT+1) will be shipped the same day (working day).

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SparkoS Labs SS3601

Discrete Dual OPA DIP8 (Unit)

SparkoS Labs SS3601 AOP Discret double DIP8 (Unité)

SparkoS Labs has created a range of discrete DIP8-mounted OPAs optimized to deliver excellent audio performance. They will allow you to replace less powerful OPA or quite simply to obtain a different sound. Moreover, with their reduced dimensions, measuring a third of the size of any other discrete OPA, they will integrate without problem in your devices and projects.

Class A biasing and high output current capacity, coupled with a proprietary compensation system requiring multiple NPO dielectric capacitors make these discrete amplifiers impossible to manufacture as monolithic integrated circuits.

Why discrete OPA ?

SparkoS Labs OPA easily outperform any monolithic OPA in terms of open loop gain, noise, output current and Class A bias current amplitude. Even the OPA OPA627 which has a good reputation is more expensive for a lower gain of 30dB and noise about twice as high. The table opposite compares the performance of SparkoS Labs OPAs and monolitchic OPAs.

SparkoS Labs AOP SS3601

SparkoS Labs Technology

Presentation :
All of SparkoS Labs OPAs are bases on Lin 3 Stage topology consisting of an input stage differential pair, a gain stage (VAS) and an output stage, all biased in Class A with two pole compensation. All active components are Bipolar Junction Transistors (BJT) to obtain the greatest linearity. Components are fully protected  from over current by active current limit circuitry in the output and gain stages. They are also protected from large differential input voltages by high-speed Schottky diodes.

Input stage :
The input stage of the SparkoS Labs OPAs contain a dual matched pair of NPN BJTs. Input offset voltage is factory trimmed and typically turns out to be better than 250uV @+/- 12VCC. A cascode Wilson current mirror is utilized as the active load for the input differential pair, for precise current matching between the input pair transistors.

Gain stage (VAS) :
The gain stage is a cascode loaded Darlington for the highest linearity and open loop gain possible. The cascode biasing voltage is derived from precision shunt references, wihch have a much lower dynamic impedance and lower noise than the low voltage Zener diodes which are commonly used to derive the bias voltage. The gain stage is also current limited for a better stability.

Output stage :
The output stage is a push-pull emitter-follower biased in Class A with 8mA standing current. Due to push-pull action, the output stage can source or sink 16mA of current and still remain in class A mode. The output stage will automatically revert to class AB in th event that more output current is demanded. Active current limiting is employed in the output stage to protect it from an over current situation. The output transistors are high gain individual devices in SOT23 package, manufactured by Diodes, Inc. who have developed an encapsulation methode to dissipate two to three times the power of a typical SOT23 packaged components. By using these output components, SparkoS Labs OPAs can have a high Class A bias current and the ability to source or sink far more output current than comparable monolithic IC. 

Compensation :
All the discret OPAs from SparkoS Labs empliy a uniquely implement 2 pole compensation scheme tjat is extremely tolerant of capacitive loading. This allows these discrete OPAs to be used on many PCB in many projects without any stability issue. Two pole compensation despite its superirority ton single pole schemes, in not often used  in monolithic OPAs because of the fabrication difficulty. Capacitors in monolitics OPAs consume a large amount of space on the die so it isn't possible to add more capacitors. SparkoS Labs OPAs are using 3 compensation capacitors so it's not possible to fabricate these OPAs as  monolothics IC. 

Schéma

SparkoS Labs AOP SS3602
Comparatif AOP SparkoS Labs par Mono & Stereo

Comparative review by Mono & Stereo

The Mono & Stereo website, specialising in HiFi news and high-end product tests, offers a comparison between SparkoS Labs PDOs and the main competitors.

Read the review

Technical characteristics

Technical specifications
OPA TypeDual discrete Class A OPA
SupportDIP8
Open loop gain140dB
Noise415nV RMS up to 20kHz
Max voltage+/- 18VCC
Output current15mA Class A
Max output current65mA
Supply power14mA
Offset< 300µV
Contacts platingGold
Others featuresOptimized for high performance audio use
2 pole compensation
NPO capacitors
Dimensions13.75 x 15 x 16.38mm
 
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Average votes
4.8 / 5
16 reviews
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Note :
 4/5
Date :
Fast and good
Sparkos ss3602 gave a better sound in my dac and the delivery was smooth and fast.
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This review has been posted for SPARKOS LABS SS3602 Dual Discrete OPA DIP8 (Unit)
Note :
 5/5
Date :
Réalisme sonore
Triple SS3602 en remplacement de 3 Muses 8920 sur une Essence STX II.
C'était spectaculaire avant, mais là c'est réaliste.

Par contre effectivement, j'ai reçu les aops dans des sachets plastique glissés dans un bout de carton.
Deux aops avaient des pattes tordues, c'est pas terrible du tout sur ce point.
 (0)
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This review has been posted for SPARKOS LABS SS3602 Dual Discrete OPA DIP8 (Unit)
Note :
 5/5
Date :
Love the sparkos ss3602
The sparkos replaced the opa627 which replaced the lm4562. To my ears the lm4562 is very unpleasant (boring, dull, small soundstage).
With ss3602 the sound is fluid, impulsive, natural and sound is coming loose from speakers and showing wide soundstage. Used in purify class-d power amp.
 (0)
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This review has been posted for SPARKOS LABS SS3602 Dual Discrete OPA DIP8 (Unit)
Note :
 4/5
Date :
Great Op-Amp, disappointing packaging
Awesome Op-Amp tested with Aune X8 DAC, Fiio AM3E Amp and Drop x Hifiman HE4xx and
compared to NE5532:

Sounds more neutral, extended highs without any sibilance (noteworthy as HE4xx tends to be sibilant).
Significantly louder (more gain), more punch, increased timbre.

Now the disappointment:
The device came in bubble wrap inside a bubble wrapped envelope. That’s it..no case include to really offer any protection against pressure. That is why the pins of this new product where bent On arrival.
For more than 80€ incl delivery I would expect a simple hard case to protect the product.
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This review has been posted for SPARKOS LABS SS3602 Dual Discrete OPA DIP8 (Unit)
Note :
 5/5
Date :
Upgrade d'un ampli audiophonics à base de purifi 1ET400A
J'ai remplacé à titre de curiosité les AOP TI d'origine de l'ampli audiophonics à base de purifi 1ET400A et noté une amélioration musicale. La scène sonore semble plus ouverte.
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This review has been posted for SPARKOS LABS SS3602 Dual Discrete OPA DIP8 (Unit)
 
SPARKOS LABS SS3602 Dual Discrete OPA DIP8 (Unit)
SparkoS Labs has created a range of discrete DIP8-mounted PDOs optimized to deliver excellent audio performance. They will allow you to replace...

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