shinomu
New Head-Fier
- Joined
- Sep 9, 2014
- Posts
- 21
- Likes
- 10
Hi, everyone
I' m the co-founder of HiFiMOD Atelier, we are the new group which settle in China mainland, major in Head-Amp（both full size and portable）,DAC, we would like to introduce our new product to everyone, hope y'all will like it.
1. HiFiMOD Atelier Portable Head-Amp - Nerv PLus
Introduction:
HiFiMOD Atelier new product, Nerv Plus, a portable earphone & headphone amplifier with ultimate performance built on opamp and discrete transistors.
We prefer full DC ampilification structure, so exactly no any coupling capacitor used. An ultrahigh frequency DC-DC boost circuit with ultralow ripple noise performs as power transformation to provide a symmetrical dual supply. A low pass π filter by a CLC circuit is adopted following the boost circuit for noise suppression. Based on 4 layer PCB design and one point grounding mode, the top layer for power supply, the bottom layer for amplification, the 2 layers inside for grounding system.
Specification:
Power Supply: ±9V
OP: BB OPA2134
BJT: (former Philips) NXP BC846B/BC856B (lettered 1B/3B)
Gain: 3(9.542dB) closed loop feedback
Load: 8~250Ω
Input Impedance: 10kΩ
Output Voltage: 10Vpp maximum(1kHz/2Vrms input)
Battery: 2000mAh 3.7V Li-ion, able to run for 12h maximum
Charge: 6h/DC 5V via micro USB interface
Dimension: L88*W61*H13mm
2. HiFiMOD Flagship Portable Head-Amp - MFA10（Coming after Chinese New Year）
We will start manufacturing this Amp after our spring festival, here is some photo for review, later i will post more tech detail
I' m the co-founder of HiFiMOD Atelier, we are the new group which settle in China mainland, major in Head-Amp（both full size and portable）,DAC, we would like to introduce our new product to everyone, hope y'all will like it.
1. HiFiMOD Atelier Portable Head-Amp - Nerv PLus
Introduction:
HiFiMOD Atelier new product, Nerv Plus, a portable earphone & headphone amplifier with ultimate performance built on opamp and discrete transistors.
We prefer full DC ampilification structure, so exactly no any coupling capacitor used. An ultrahigh frequency DC-DC boost circuit with ultralow ripple noise performs as power transformation to provide a symmetrical dual supply. A low pass π filter by a CLC circuit is adopted following the boost circuit for noise suppression. Based on 4 layer PCB design and one point grounding mode, the top layer for power supply, the bottom layer for amplification, the 2 layers inside for grounding system.
Specification:
Power Supply: ±9V
OP: BB OPA2134
BJT: (former Philips) NXP BC846B/BC856B (lettered 1B/3B)
Gain: 3(9.542dB) closed loop feedback
Load: 8~250Ω
Input Impedance: 10kΩ
Output Voltage: 10Vpp maximum(1kHz/2Vrms input)
Battery: 2000mAh 3.7V Li-ion, able to run for 12h maximum
Charge: 6h/DC 5V via micro USB interface
Dimension: L88*W61*H13mm
2. HiFiMOD Flagship Portable Head-Amp - MFA10（Coming after Chinese New Year）
We will start manufacturing this Amp after our spring festival, here is some photo for review, later i will post more tech detail
