User Manual

Table Of Contents

Front Panel

01 02 03 04 05 06

1. INPUT

Connect your audio source to this input

2. HI / LOW SWITCH

Select between high and low input impedance

HI = 1M OHMS

LOW = 220K OHMS

3. MASTER

Adjusts the overall output volume

4. PRESENCE

Adjusts the overall upper-mid range brightness

5. STANDBY SWITCH

Leave this switch in “STANDBY” position for 30 seconds after

powering on the ampliﬁer.

Then switch to the “ON” position

6. POWER SWITCH

Toggles AC power to the ampliﬁer on/off

Always ensure the STANDBY switch is in the “STANDBY” position

when powering the tube engine ON

7. POWER LED

This LED will illuminate when the TUBE ENGINE is switched on