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Retro Amplifier Series
Retro 3886 Chip Amp STD
Usually Ships in 2 to 3 Weeks
The Retro Dynaco-style Gainclone LM3886 Chip Amplifier by Dalaudio exceeds 120 watts across 2 channels, and delivers clean detailed sound for your critical listening pleasure.
Chip Amp type: Two (2) National Semiconductor LM series National Semiconductor - LM3886 - High-Performance 68W Audio Power Amplifiers for a total power output in excess of 120 watts(68 wpc)
Main Board: DALAUDIO designed form factor high quality printed circuit board featuring a minimum of point to point wiring to eliminate the possibility of noise.
Power Supply: Brian Bell Version 2 Rev 1.0: Dual rectifier SNUBBER design using two pairs of 4 MUR860 diodes. Filtering is done with 2 10,000uf capacitors on PSU board.
Transformer (Mains): 160 VA 22v/22v made by Avel Lindburgh Inc. (Y236503)
Speaker OutPut Terminal Type: Gold Plated Color Coded - For direct wire compression or banana plug
Audio Input Jacks: Gold Plated color coded with PCB backer boards
Chassis Type: Retro Dynaco look, black powder coat steel with black painted perforated metal cover
Approximate Dimensions: Length (Front) 13" x (Depth speaker/switch)10.25" x (Height) 4"
Heat Sink: Internal extruded configuration: Allows more than adequate cooling. (See extrusions in picture with top removed but actual unit may vary slightly in size of sink as later units were appropriately down sized)
Power Input: Removable IEC 3 prong power cord with ground and integral power switch
Fuse: 2 amp bus removable – supplied but not installed
LM3886 Output and Operating Characteristics per National Semiconductor Datasheet: The LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4 load and 38W into 8 with 0.1% THD+N from 20Hz-20kHz. For more info see the LM3886 specs on our Gainclone FAQ page.
To maximize the potential of this amplifier, the peripheral equipment must have a good detailed source. If a noisy preamp is used (as this is only an amplifier it does not have any volume control or source buffering or equalization) a lackluster sound will result. Likewise with detailed sound, the amp will produce detail out. And the sound is fast as it is detailed. With no input the amp will be dead quiet.
These amps must be powered up with no source input volume. We have limited noise reduction filters to provide the best possible sound. Pops may be heard if you power up the units with the source active.
Inspired by the sound quality of amps costing five times as much, our design has been used on many high quality professional audio projects.
The basis of this amplifier project is the National Semiconductor LM Series, or Gainclone Amplifier Chips. This DALAUDIO Retro Amplifier (tm) utilizes high quality printed circuit boards designed by Brian Bell of Chipamp fame.
Non-inverted design, which to us simply sounds better.
Snubber PSU, provides a little more low end response reserve
Retro Dynaco-style chassis of black powder coat steel with black cover, Length (Front) 13" x (Depth speaker/switch)10.25" x (Height) 4"
Built by hand with meticulous care in our Ohio workshop, this is a fully tested prototype amplifier.
DALAUDIO Hospital Grade 10ft Power Cord
Deluxe RCA Stereo Cable 6 ft
Dalaudio Retro 3875 Chip Amp STD
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