Two-Rock Emerald 50, Sapphire 100 Owner's Manual

Two-RockTwo-Rock

Emerald Emerald 5050

Amethyst Amethyst 5050

Sapphire Sapphire 100100

Owner’s Manual

Thank you for your purchase of a

Two-Rock Two-Rock amplifier from K & M Analog DesignsK & M Analog Designs..

As a discerning guitarist, you know the road
to great tone begins with great components.
Our classic design, carefully selected parts and
hand-built approach combine to make an
extremely versatile instrument.

Please take the time to read this manual. We
hope it will answer any questions you may have.

We extend a warm welcome to you as a
member of a select group of musicians who have

chosen a Two-Rock amplifier.

Page 1

FRONT PANEL FUNCTIONS

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1. INPUT JACK- High impedance input to the amplifier. Plug in your

instrument here.

2. TREBLE CONTROL- Adjusts the high-frequency response. In the full

counter-clockwise position, high frequencies are bypassed to ground. In
the full clockwise position, high frequencies are allowed to pass to the
next gain stage.

3. MID-RANGE CONTROL- Adjusts the mid-range response. In the full

counter-clockwise position, the tone will be somewhat “scooped” of mid­range response, emphasizing the highs and lows. In the full clockwise
position, mid-range frequencies are allowed to pass to the next gain
stage.

4. BASS CONTROL- Adjusts the bass response. In the full counter-

clockwise position, low frequencies are cut. In addition, the response of
the treble and mid-range controls is greatly reduced. In the full
clockwise position, low frequencies are allowed to pass to the next gain
stage.

5. BRIGHT SWITCH- Boosts the high frequency response. This is most

effective when the input gain is set at 12 o’clock or lower. The effect is
less dramatic as the input gain control is adjusted past the 12 o’clock
position.

6. DEEP SWITCH- Boosts the low and low-mid frequencies. This is a

low frequency contour switch, changing the low and low-mid response.

7. INPUT GAIN- Adjusts the overall gain of the amplifier. Start with this

control in the 12 o’clock position. Keep in mind that the amount of gain
set here determines the signal level feeding the lead channel. Low gain
settings of this control will require higher lead gain settings for the same
amount of overdrive.

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