A90 Desktop Full Balanced Headphone Amplifier HiFi Headphone Amp 7600MWx2 Audio Preamplifier Silver

A90 Desktop Full Balanced Headphone Amplifier HiFi Headphone Amp 7600MWx2 Audio Preamplifier Silver

Advantages:
- Used as headphone amp or preamp
- Four-pin XLR balanced+4.4 balanced+6.35 single-ended output
- Three gains
- NFCA amplifier circuit
- THD+N<0.00006%
- Dynamic range 145dB
- Noise<0.2uVrms*
- Output impedance <0.1Ω
- Output power 7600mWx 2

Attention:
- Because the noise level of audio analyzer APX555B is far below, this parameter is measured by indirect measurement method, that is, the noise is amplified by 100 times, and the reading is divided by 100.

Features:
- Newly developed NFCA circuit. The A90 uses a newly developed NFCA (Nested Feedback Composite Amplifier) circuit, uses a voltage-current hybrid feedback architecture and UHGF (ultra high gain feedback) technology to provide excellent DC performance and extremely low distortion. Powerful output current capability provides sufficient guarantee for driving low-impedance headphones. 0.2uV is far lower than the low noise of the entire industry, providing an excellent 145dB dynamic range and a noise level that the most sensitive earphones can’t hear.
- Balanced/single-ended output. A90 also provides four-pin XLR balanced, 4.4 balanced, and 6.35 single-ended headphone output interfaces to meet the needs of different headphones.
- Suitable for high resistance and low resistance headphones. A90 achieves several elements of an ideal headphone amplifier at the same time: single-ended 25Vpp/balanced 49Vpp high output voltage, up to 7600mW output power under balanced output, and low output resistance less than 0.1Ω. When working with high-resistance or low-resistance headphones, it can deal with them at ease.
- A90 has three gain options, single-ended: -9.5dB, 0dB, 9.5dB; balance: -3.5dB, 6.0dB, 15.5dB. With a noise level of only 0.2uVrms, it is as small as pushing high-sensitivity in-ear headphones with low gain, and as large as pushing high-resistance headphones with high gain.
- As a headphone amp and a preamp. The NFCA circuit of A90 can not only ideally drive headphones, but also can be used as a preamp. When preamp is used, the single-ended output impedance meter is 20Ω, and the balanced output impedance is only 40Ω, which is widely adapted to the input impedance of various amplifiers.
- When A90 is used as preamp, it can be used with D90 DAC, and it is a good companion for active speakers.

Package Included:
- 1 x Set of Headphone Amp Preamp

Note:
- It is assembled and ready to use.