ATI Audio Inc L200 Stereo Line Amplifier

ATI Audio Inc L200 - Compact Stereo Line Amplifier with Independent Gain Controls

ATI Audio Inc L200 - Compact Stereo Line Amplifier with Independent Gain Controls

B&H # ATL200 MFR # L200
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  • 1Description

The L200 from ATI is a compact, stereo line amplifier that can be used as a a gain block, an attenuator, impedance converter or signal splitter. Two screwdriver adjusted, full range gain controls provide 28dB gain at full clockwise rotation.

The input provides 40kΩ impedance for line levels up to +24dBm, while the high input-impedance also allows the unit to bridge -10dBu lines without loading.The servo controlled output drivers are ground-sensing circuits, and supply over +22dBm to 600Ω balanced loads, and +20dBu to high impedance, unbalanced loads.

The L200 is part of the NANOAMPS series, and is able to share a single external 24VDC power supply utilizing its built-in, loop-through DC connectors. A power supply is not included with this unit.

Dual line/buffer amplifier
Full-range gain controls provide 28dB gain at full clockwise rotation
+22dBm low distortion outputs drive balanced or unbalanced 600Ω lines
XLR input and output connectors
Optional battery packs and DC to DC converters are available for portable use
In the Box
ATI Audio Inc L200 - Compact Stereo Line Amplifier with Independent Gain Controls
  • One (1) Year Warranty
  • Table of Contents
    • 1Description
    Frequency Response 20Hz to 20kHz, +0.25dB
    Noise Level SNR: -90dBm, maximum output
    Maximum Input Level +24dBu
    Maximum Output Level +22dBm to 600Ω load
    Input Connectors 2 x XLR
    Output Connectors 2 x XLR
    Input Impedance 40kΩ bridging, balanced
    Output Impedance 40Ω, balanced
    Dimensions (WxDxH) 5.5 x 5.75 x 1.5" (138 x 146 x 38mm)
    Weight 1.5 lbs (0.7 kg)
    L200 Stereo Line Amplifier is rated 4.5 out of 5 by 2.
    Rated 5 out of 5 by from Solved the problem We needed to drive a phone line hybrid from the output of a sound card. Although this only required one channel, this proved to be the ideal solution. We grounded the box and ran both input and output balanced. The gain was adequate as was the output although there was not much headroom left when driving a phone line.
    Date published: 2011-07-24
    Rated 4 out of 5 by from Review of ATI Stereo line buffer amp The ATI L200 is a useful device. Its main uses will be to buffer blended signals. To place a mono signal in two independent outputs. For use as a positive or negative gain stereo or mono voltage amplifier. The L200 has two xlr balanced inputs and two balanced outputs. It can provide up to 28 db of gain down to zero output. Input impedance is 40 Kohm and output impedance 40 ohms which presented a problem that I had to solve. The unit comes with a 24 volt DC power supply. There is a 24 volt DC output that can power another unit. Be careful if you do, the outside of the DC plug is hot! I used my unit as part of my triamped dual aperiodically damped transmission line monitor speakers. These are a novel design of mine and are truly full range. However the LFE signal which is mono needs blending with the signal from the low pass active filters which are stereo. So I took the balanced LFE out from my Marantz AV 8003 pre/pro, to the left balanced input of the L200. I opened the unit up and moved the link to the mono sum position. Then I could blend the LFE output with the low pass outputs of the active crossovers from the two L200 outputs However the low 40 ohm Zs output impedance drastically dropped the output from the low pass crossovers. So I had to modify the unit to increase the output impedance. One other problem, when power is cut to the unit a large spike appears at input and output. The unit sent my Marantz into reset. So I have left the unit permanently on. The unit contains no on/off switch. All in all the unit is nicely made, has excellent signal to noise in all modes except maximal gain where it is noisy. It would be better if it did not have a huge turn off thump, and had provision for a higher impedance output when used as a combining buffer amp. However when all is said and done this is a useful unit, but for the price could be improved.
    Date published: 2010-03-23
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