The TL-818 HEADPHONE AMPLIFIER/LINE STAGE is one of the introductory products from Sideways Eight
Selection of high density pressed bamboo chassis
Each pair consists of a power supply unit and a signal unit that contains the audio
amplification circuitry. Vacuum tube rectification is used because it
sounds excellent. Low henry, low DCR filter chokes are utilized so the power supply
will be fast and agile. Shunt regulation on the main audio chassis
provides an ultra fast low impedance power supply.
The main audio circuit
comprises the 6C45Pi triode gain stage actively loaded by a hybrid 12HL7 constant current source. The output is capacitor coupled to the TL-818
autoformer that MagneQuest/Peerless has built exclusively for Sideways Eight Audio
The TL-818 is a special
version of the autoformer that Ercel Harrison, the Chief Designer of Peerless,
created in 1946 for MGM Recording Studios.
According to Michael LaFevre of MagneQuest, these autoformers are "labor intensive and very exotic in design, including double C-cores, several winding
sections, interleaving between "primary" and "secondary",
reversed windings, several different wire gauges, multiple paralleled windings,
and custom brackets with lots of machine & finish work." The exemplary
design and construction are realized in the listening evaluation: music that is dynamic and "live."
For headphone use, the TL-818 enables
user-selectable output impedances for matching different headphones. For
example, the exceptional Sennheiser HD-800 works beautifully from the 200 ohm
position and the Beyerdynamic T1 is driven using the 500 ohm position. Final Audio Design's lively Pandora Hope VI and hedonistic in-ear monitors such as FAD's FI-BA-SS and JH
Audio's Roxanne match well with either the 10 or 4 ohm outputs.
forward to sharing with you the wonderful sound of the TL-818 headphone amplifier/line stage.
Please contact us for more information: