Tagged with amplifier - Personal View Talks

SINEWAVE GD22D and GD33D - 3 way / 2.1 active amplifiers with DSP

Vitaliy_Kiselev — Mon, 09 Dec 2013 16:29:53 +0000

It is using advanced ADI DSP chip. Has complete single-chip audio system with a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing includes equalization, cross-over, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening. This processing can be used to compensate for real-world limitations of speakers, amplifiers, and listening environments, providing dramatic improvements in perceived audio quality. Most processing is done in full 56-bit, double precision mode, resulting in very good performance. It is a fully programmable DSP. The easy to use SigmaStudio software allows the user to graphically configure a custom signal processing flow using blocks such as biquad filters, dynamics processors, level controls, and GPIO interface controls.

Long story short. If you use it 2.1 system you can add advanced parametric equalizers and tune subwoofer crossover as you like. Still having USB DAC, headphone amp and power amp included.

If you have big 3 way speakers pair of such devices can fully replace passive crossovers and amplifiers (thing usually done with DCX2496 - http://www.behringer.com/EN/Products/DCX2496.aspx and additional amps).

It is now very widely known product, but this company exist for quite long time already.

Headphone amplifiers, stationary

Vitaliy_Kiselev — Mon, 21 May 2012 03:34:38 +0000

I am using this one for quite long time.
Recommend to get better external power supply, otherwise it is very handy and very good amp.

Price: around $160 shipped

http://www.ebay.com/itm/HLLY-Mini-USB-DAC-Headphone-Amplifier-MK2-SPECIAL-/260503078087

Headphone amplifiers, on location use

Vitaliy_Kiselev — Mon, 21 May 2012 06:58:28 +0000

Superlux HA3D

Headphone amplified made for teams requiring monitoring on up to three headphones in parallel.

Very sturdy case, similar to Sound Devices. Locking connectors. Thing thing is made to take serious beating.
Works either from AA batteries or 5-17VDC external power (so, almost any external solution will do).

See small review at: http://www.headfonia.com/superlux-ha3d-amplifier/
User guide: http://www.superlux.com.tw/upload/function.product.info/65ccd6f5-cbc1-4b85-a0aa-3aef01daf3ab/resource/um_HA3D_web_en.pdf

Price: $159

http://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l2736&_nkw=Superlux+HA3D