The 108 Pro amplification circuit is derived from the famous Swiss machine Dartzeel NHB-108 with a value of up to $50000. The main amplification circuit uses a 1:1 straight etching original machine, and the component model and parameters are completely consistent with the original machine, with a sound that is completely consistent with the original machine.
The 108 Pro (NHB-108) pure power amplifier circuit adopts a non large loop feedback amplifier circuit, completely eliminating the influence of horn back electromotive force on the amplifier. The highly acclaimed NHB-108 minimalist broadband circuit features a revolutionary design with strong current output capability and incredible audio quality. There is no global negative feedback, and there is no negative feedback or compensation network in the input and output stages. The unique open-loop design of the output stage.
Sound characteristics:
This is a pure power amplifier suitable for sitting down and slowly enjoying music. The sound is quite smooth, open, natural, and not noisy at all, which is quite pleasant to the ear. In terms of bass, both volume and diving are good. Because it is an open-loop feedback amplifier with top-notch control, it is worth a try.
Materials used:
● 6 pairs ON High-power sub transistor king MJL3281A/MJL1302A.
● 8 pairs ON Push tube kings 15032/15033.
● 12 PCS Audiopile ELNA 10000uF/63V HIFI grade large filtering capacitors. Double sided high current rectifier bridge parallel design.
● Full aluminum chassis CNC machining customization, with a very beautiful surface effect treatment.
● Adopting dual 400W OFC pure copper transformers, the two channels are completely independently powered. Shielded with an iron cover.
● High quality gold-plated RCA+crystal wiring terminals.
Input voltage: AC 115V or 230V(Optional)
AP test parameters: (6 ohms load test data per channel)
Output power: 150W+150W 8ohm, 300W+300W 4ohm
Output effective value: 35.1Vrm
Channel gain: 26.6dB 21.4x
Input: RCA or XLR
Signal to noise ratio: 126.4dB (RCA and XLR is the same)
Dynamic range: 126.4dB
THD distortion: 0.00086%
THD+N distortion: 0.005%
Frequency response bandwidth: ± 0.050dB
Input sensitivity: 1.66V
Input impedance: 22K
Size: 430mm * 330mm * 150mm (W*D*H)
Package weight: About 21KG
The packaging includes:
NHB-108 Pro Stereo class AB Pure power amplifier X1
