Beta Mini Guitar and Bass Amp

• Tight, fast response with a lot of control
• Designed to cut through a mix, not get lost in it
• More precise than many “set and forget” amps
• Uses an active EQ, giving you more control over your sound
• CMOS distortion
  
  👉 Think: controlled, punchy, and very responsive

The Beta Mini uses an active EQ, which behaves differently than the passive EQ on most amps.

Most amps (passive EQ):
• Mainly cut frequencies
• Knobs reduce parts of your sound

Beta Mini (active EQ):
• Can boost and cut frequencies
• Knobs can actively add presence, depth, and punch

👉 In simple terms:
Passive EQ shapes your sound. Active EQ lets you build it.

• Because of the active EQ and responsive design
• Small adjustments = noticeable results
• It’s meant to be dialed in, not ignored

• The EQ directly impacts both tone and output
• Mids especially control how well you’re heard

👉 If your sound isn’t cutting through, start with the mids

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Pro tip from the Sunn team

For maximum output and presence:
• Start your EQ knobs around 3:00 (about 75%)
• Then adjust up or down to taste

Because the Beta Mini uses active EQ, turning the controls up actually adds energy and output, not just tone shaping.

👉 This is different from many amps, where higher EQ settings don’t necessarily increase impact

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💡 What this means in practice
• Low EQ settings can make the amp feel quieter or less present
• Higher EQ settings unlock more of the amp’s full output and punch

Loudest with 4 ohm cab, 4 or 8 recommended not 16.
• Works great with 1x12, 2x12, or 4x12 guitar cabinets
Make sure:
• You’re using the correct input (mono vs stereo)
• Your impedance is matched

👉 A 2x12 is often a great balance of size and output

Yes. A big one.
• Higher efficiency speakers (~100 dB) = louder
• Lower efficiency speakers = less output

👉 Same amp, very different results depending on speakers

• Gain controls tone and saturation
• Master controls actual loudness

👉 For more volume, raise the master, not just gain

Mini accepts either a ¼ inch speaker cable or speak-on connector
• Always use a speaker cable
• Not a guitar/instrument cable

In most cases, this comes down to setup:
• Cabinet input or wiring (mono vs stereo)
• Speaker efficiency
• EQ settings (turn UP all the EQ knobs, then turn back down)
• Gain vs master balance
• Cable type

👉 The amp is capable of very high output. The setup determines what you hear.

The Beta Mini gives you flexible routing options depending on how you want to use it.

Preamp Out
• Sends the signal after the Beta Mini’s tone shaping
• Use it to:
• Feed another power amp
• Go into a recording interface
• Run into another amp

👉 Use this when you want the Beta Mini’s tone, but not its power section

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Power Amp In -
• Bypasses the Beta Mini’s preamp
• Sends signal straight to the power section

👉 Use this to:
• Plug in a different preamp
• Use modelers or pedals as your tone source

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Using both together (Effects Loop)
• Connect:
Preamp Out → effects → Power Amp In

👉 This works like a traditional effects loop, ideal for:
• Delay
• Reverb
• Modulation

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🎯 Simple way to think about it
• Preamp = tone shaping
• Power amp = volume and output

The Beta Mini lets you separate and control both.

Yes. No worries. Use it for recording or with a direct PA system. We suggest adding an IR box to get that “through a cabinet” tone.