L1541DAC gold TDA1541 decoder, coaxial, fiber optic, USB kit + finished product
Product Description :
Please note: the finished machine is not sold with the TDA1541 chip. If you need to use the TDA1541, the shop can also purchase it. The TDA1541 chip needs to be placed separately.
For the convenience of friends who like DIY, this decoder offers two sales models: kit and finished product:
White: PCB + all patch components + CS8416 + EEPROM chip + STC11F02E (write the monitor program),
Red: components on the PCB and PCB (excluding four transformers and TDA1541, chassis),
Gray, black: for finished machines, no TDA1541 chip).
In order to play this timeless classic, we do this:
Power supply: Four high-quality sealed transformers are used to strictly distinguish between digital power supply, decoder chip power supply and LPF power supply. For the TDA1541 chip, two negative voltages (-5V, -15V) use two transformers to avoid the introduction of the LPF power supply loop - 15V causes cross interference!
Five sets of shunt regulated power supplies: the decoding details and dynamics are fully utilized. For various power supply circuits, there are many controversies, but the shortcomings of shunt regulation are only low efficiency and high cost. The quality is definitely not comparable to any series regulator. The internal resistance, ripple, transient response time and other voltage regulator circuits are not in use. On one level.
MCU soft control digital receiving: Microcomputer dynamic optimization parameters, dynamically adjust the phase detector of the receiving chip (CS8416), so that it automatically adapts to the input bit rate, and minimizes the jitter.
Indispensable digital filter: Any TDA1541 decoder that does not use the SAA7220 digital filter is no longer the sound of the 1541.
Well-designed two-stage LPF circuit: This decoding uses four single op amps to complete the two-stage LPF low-pass circuit. This is a very important design, and its driving capability and LPF circuit characteristics are guaranteed.
Detail design: A lot of details determine the success or failure. The details of this decoder are not compromised. Even if the dual-capacitor position of the coupled output is placed (for tuning), it can show unparalleled intention.
High-grade and elegant appearance: Please look at the physical map. You can take the current decoder more than one. In terms of appearance, it is estimated that our L1541DAC gold is the flagship, CNC precision processing, high-grade wire drawing oxidation process, laser engraving!
Fever materials: For several hundred yuan TDA1541, four sealed transformer power supply, parallel voltage regulator, MCU soft control, a large number of use of fever components (Panasonic, Philips, ELNA, Wima capacitors), the original design is the first sound quality, Cost second place!
Post-tuning design changes (very important, please refer to the purchase kit friends):
1. Upgraded the SFC11F02E MCU with internal storage. The monitoring program stores the decoding working state with a more stable internal flash memory. Therefore, the external 24C02 flash memory does not need to be soldered (the small chip in the SOP8 package on the right side of the MCU), and the kit is no longer used. Matching.
2. The LPF part has two 1N capacitors and is changed to Epcos 2N2.
3, the output coupling part uses nichicon MUSE 47uf non-polar capacitor or Philips axial fever capacitor, random delivery, can also be specified, cancel the original wima parallel ELNA design.
4, the op amp can be upgraded LT1028, I compared OPA627, LME49710 and other op amps, LT1028 will be more suitable, the sound line is more detailed.
About the sound quality: TDA1541 is a long-lasting chip. It has very obvious characteristics. It is almost the most simulated chip with cash. The high frequency is gorgeous and not sturdy. The low frequency is deep and steady. The intermediate frequency is brighter. You don't want it. Take the current chip rate of 192K and the parameters of 1541. In fact, in the face of 16bit 44.1K, even if you can surpass the 1541 chip from the parameters, it is very rare. In your hard disk, it is estimated that 99% is 44.1K. CD music.
Digital input: coaxial, optical, USB
Analog output: RCA analog output.
Digital input code rate: 16bit, 44.1K 48K.
Analog output level: 2Vrms.
Power supply: AC220V.
Volume: Width 220 Height 52 Depth 191
Weight: 2.7 kg
US, Australia, UK, Germany, Canada: 3~5 weeks Other European Countries: 3~5 Weeks. Items will be shipped in within 4 days after payment is received. The Parcel Status Can Be Tracked WWW.17track.net 8-10 Days Later After Sending.If You Don't Receive the Item On Time, Please Take Time to Contact us.
TERMS OF SALE
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If you are not satisfied with the item you received, Please contact us for parcel return & payment refund.The returned parcel shouldbe sentback in original package in14days after the receipt.But you have to pay for the returned.We strive for 100% customer satisfaction on every sale we complete.
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