The OB-6 Desktop has the exact same architecture and all the same great features of the OB-6, trimmed down into a sleek, portable desktop unit.

The OB-6 features two discrete voltage-controlled oscillators (plus sub-oscillator) per voice, with continuously variable waveshapes (sawtooth and variable-width pulse, with triangle on oscillator 2). There is a classic SEM-inspired state-variable filter (low-pass, high-pass, band-pass, and notch) per voice. Voltage-controlled amplifiers complete the all-analog signal path. “The classic, bold SEM sound is all there,” said Oberheim.

Present also is X-Mod, with filter envelope and oscillator 2 as modulation sources (with bi-polar control). Destinations include oscillator 1 frequency, oscillator 1 shape, oscillator 1 pulse width, filter cutoff, and filter mode.The knob-per-function front panel puts virtually all parameters at a user’s fingertips. Toggling on the Manual switch enables live panel mode, in which the OB-6 switches to the current settings of its knobs and switches. 

A dual effects section provides studio-quality reverbs, delays (including standard and BBD), chorus, and faithful recreations of Tom Oberheim’s acclaimed phase shifter and ring modulator. The effects are digital, with 24-bit, 48 kHz resolution, but a true bypass maintains a full analog signal path. Additionally, the OB-6 features a multimode arpeggiator and a polyphonic step sequencer with up to 64 steps (and up to 6 notes per step) plus rests. It allows polyphonic keyboard input and can sync to external MIDI clock. 

The full-size, four-octave, semi-weighted keyboard is velocity and aftertouch sensitive. Said Dave Smith, “As with the Prophet-6, we made size a primary concern on the OB-6. It’s the right mix of power and portability and it fits right in on-stage or in the studio.” Added Oberheim, “And of course, it’s got that unmistakable SEM sound that’s going to turn a lot of heads. ”

OB-6 Synthesizer Features

OSCILLATORS

• Two discrete VCOs per voice
• Continuously variable wave shape (sawtooth and variable-width pulse, plus triangle on oscillator 2) per oscillator
• Pulse width per oscillator
• Hard sync: oscillator 1 syncs to oscillator 2
• Square wave sub-octave generator (oscillator 1) per voice
• Low frequency mode (oscillator 2)
• Keyboard tracking on/off (oscillator 2)
• Oscillator detune amount for increased tuning instability, from subtle to extreme

MIXER

• Oscillator 1 amount
• Oscillator 1 sub-octave amount
• Oscillator 2 amount
• White noise amount

STATE-VARIABLE FILTER

• Two-pole, resonant, filter per voice with low-pass, high-pass, band-pass, and notch functionality inspired by the original Oberheim SEM filter
• Bi-polar filter envelope amount
• Velocity modulation of envelope amount
• Keyboard tracking: off, half, full

FILTER ENVELOPE

• Four-stage (ADSR) envelope generator
• Velocity modulation of envelope amount

AMPLIFIER ENVELOPE

• Four-stage (ADSR) envelope generator
• Velocity modulation of envelope amount

LOW FREQUENCY OSCILLATOR

• Five wave shapes: triangle, sawtooth, reverse sawtooth, square, and random (sample and hold)
• Clock sync (internal or external MIDI clock)
• Initial amount
• Mod destinations: oscillator 1 frequency, oscillator 2 frequency, oscillator 1 and 2 pulse width, filter cutoff, filter mode

X-MOD

• Sources: filter envelope (bi-polar) and oscillator 2 (bi-polar)
• Destinations: oscillator 1 frequency, oscillator 1 shape, oscillator 1 pulse width, filter cutoff, filter mode

AFTERTOUCH

• Source: channel (mono) aftertouch with bi-polar amount
• Destinations: oscillator 1 frequency, oscillator 2 frequency, LFO amount, amplifier envelope amount, filter envelope amount

CLOCK

• Master clock with tap tempo
• BPM control and display
• MIDI clock sync

ARPEGGIATOR

• Selectable note value: 16th note, 8th note triplet, 8th note, dotted 8th note, quarter note
• One, two, or three octave range
• Up, down, up/down, random, and assign modes

SEQUENCER

• Polyphonic step sequencer with up to 64 steps and rests

EFFECTS

• Stereo analog distortion
• Dual, 24-bit, 48 kHz digital effects, including: reverb (room, hall, plate, spring), delay (full bandwidth digital delay and emulated bucket brigade and tape delays), chorus, flanger, phase shifters, and ring modulator
• Delay sync
• True bypass maintains fully analog signal path when digital effects are off

PERFORMANCE CONTROLS

• Full-sized, semi-weighted, 4-octave keyboard with velocity and aftertouch
• Backlit pitch and mod wheels
• Spring-loaded pitch wheel with selectable range per program (1 to 12 semitones up and down)
• Transpose controls for an 8-octave range
• Hold switch latches held notes on
• Polyphonic portamento
• Unison (monophonic) mode with configurable voice count, from one to all six voices, chord memory, and key modes
• Manual switch: when off, the front panel is live; what you see is what you hear

PATCH MEMORY

• 500 user and 500 factory programs in 10 banks of 100 programs each
• Direct program access, including single-button access to the current set of 10 programs

New Gear

We are authorized dealers for a number of great companies that back their products with standard warranties.

We extend this warranty period for 1 year beyond the manufacturer's as a token of our gratitude for shopping with us  :)

We want to make sure that you don't get stuck with a lemon and will either replace or have the unit repaired by an authorized service center on our dime.

We offer a 30 day return policy 'no questions asked'.

Unless the item is defective, you will be subject to a 15% restocking fee. 

Used Gear

All gear is tested prior to listing for sale. Any known issues will be mentioned in the item description.

We work extremely hard to make sure that you have peace of mind when buying pre-owned gear. 

You will have 14 days from receipt of the item to test and make sure that everything meets your expectations. 

If the item is found to be defective, we will cover return shipping. You must contact us first to set up the RMA. 

Any used items returned for reasons other than functionality (within this 14 days) will be subject to a 20% restocking fee. 

We will bend over backwards to make sure that you are happy with your purchase.

If you have any issues or questions at all please email or call us.  We are happy to assist!

Orders will be processed and handled within 1 business day in most cases.

Orders placed before 1pm PST during our business hours generally are shipped the same day.

We also offer expedited shipping. If you have any special requests please contact us first, and we will do our best to accommodate you.

Domestic Buyers

• We offer Free shipping on every item big or small to the lower 48 US States
• Hawaii, Alaska & Puerto Rico residents are subject to a handling fee, so please contact for quotes.
• We ship to APO & FPO addresses, but please contact for a quote. 
• We insure every package for the full amount 
• Any purchase over $200 will require a signature. THERE ARE NO EXCEPTIONS! 

International Buyers

• We ship via FedEx or USPS to most countries around the world
• Buyer is 100% responsible for ALL Duties & Taxes (VAT,etc.) imposed by your local government/ customs officials. 
• These are not included in our Shipping & Handling fees so please be aware before purchasing.
• International orders are usually delivered in 3-5 business days if there are no delays caused by customs or weather conditions.

Return Policy

• You must contact us for a RMA (Return Merchandise Authorization) within 30 days for new gear and 14 days for used gear.
• Items are subject to either a 15% (new gear) or 20% (used gear) restocking fee, unless found to be defective. 
• Customer is required to cover shipping using a trackable service with signature confirmation.
• We will cover return shipping for defective items and submit a return label via email.
• All new items must return in 'new' condition with all original packaging, warranty cards, and cables. 
• All used items must be returned in the same condition as picture & represented online.
• If new items arrive damaged and/or without original materials the RMA may be revoked or you may be subject to a 25% restocking fee. 
• If used items arrive damaged the RMA may be revoked or you may be subject to a 30% restocking fee. 
• Please allow up to 5 business days for us to process returns. Refunds, store credit or replacements will be handled within that time frame

If you experience a problem with a unit: do not attempt to open or repair the unit yourself. 

Any attempt to do so will void any warranty or guarantee. 

Please send us a detailed description of the problem you are experiencing and we will have a team member contact you as soon as possible.

International Buyers

We are not responsible for unit damaged due to use of improper voltage. 

Please make sure to double check voltage compatibility and use a proper voltage converter when necessary.

Our customer service hours are Monday through Friday, 10AM to 7PM Pacific Time.

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