Buffer Purifi Audio 1ET9040BA (pair)

INPUT BUFFER FOR PURIFI AUDIO 1ET9040BA MODULE

This buffer is based on a modification of the buffer used in the Hypex NC500, NCx500, and Purifi 1ET400 modules. This module requires a high current to power the internal drivers, and few operational amplifiers on the market are capable of providing that current.

The components used in this buffer are of very high quality and from the best manufacturers on the market. The resistors have a tolerance of 0.1% to avoid the minimum deviation in the gain. The capacitors are Wima and Vishay polyester with a tolerance of 5%. The electrolytic capacitors are Panasonic ECA series with very low resistance. Voltage regulators are LDO (optional very low noise). All components are TH and mounted on a double-sided fiberglass PCB with ground plane to avoid interference.

The main characteristics of this buffer are:

• High CMRR
• Better PSRR
• Provides current drive regulated to Purifi amp +/- 80mA easily
• Phase, Frequency razor flat to 100KHz
• 14.7 dB gain
• Extremely low THD+N at largue signal levels
• Stays linear at largue signal levels
• Remains stable at all IN-Z´s
• PCB compatible with Sparkoslabs SS2590 and Sonic Imagery API2520 op. amp.

The user can choose between:

• Only PCB with standard operational amplifiers (LM4562) and voltage regulators
• Operational amplifier SIL994 Enh Ticha or Sparkoslabs SS3602 or MUSE03
• Low Noise voltage regulators SS7812, SS7912 and SS7805 for digital section (Sparkoslabs)

The kit consists of the complete buffer PCB with all components, connectors, voltage regulators and with the chosen op amp.
The PCB only option include the voltage regulators, the op amp, components and connectors.

The kit includes two units for stereo