Zu Audio Soul Superfly Edition MK.I-B Floor Standing High Efficiency Speakers

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General:
Soul Superfly is a vivid, punchy, neutral and tone-rich speaker that resets your assumptions about how much cash to allocate to power.

Soul Superfly Mk.I-B can be identified by two main features:
- The revision Mk.I-B nameplate on the back of the speaker
- And the engraved model number in the full-range driver

Soul Superfly is our single-minded response to the needs of users of amplifiers that benefit from high-impedance 16 ohm speakers.

That list of amps includes most vintage amps, and any modern amp that is, or can be optimized for a 16 ohm loudspeaker—single-ended triode (SET) vacuum tube amps, output-transformerless (OTL) vacuum tube amps, some solid-state like some of the First Watt models, and even many of the mid-fi Japanese receivers.

Our design target from the outset was focused on extracting every last bit of tone and texture of such amps while getting even better power and definition out of the system.

So why a 16 ohm loudspeaker in today's market? Because there are still hundreds of amp models being made today that will sound their best on a speaker that presents an easy-going 16 ohm load.

Super clean and well-cared for. Consecutive serial numbers.

Please note these speakers are exempt from any free shipping promotions. They will ship via UPS anywhere within the lower 48 US states for $275.00. Local pickup also welcome.

Ownership:
Single Owner

Cosmetic Condition:
8/10 = Very Good. Excellent front faceplate, one minor flaw on chassis side or top. See our detailed rating description here.

Working Condition:
Working perfectly and tested in our lab and listening room.

Included:
Exactly as pictured and described above.

Packing:
Will be packed using our highly developed in-house process and custom packing materials.Link to Manual:
Click Here

Recommended Cables:

Kimber Kable - Speaker Cables - Better

Our speaker evaluation process starts with a visual inspection of all drivers. We are looking for damaged or deteriorating woofer surrounds, dented tweeter domes, and cone damage. We also inspect the speaker connection points for loose or broken connectors.

After the initial visual inspection we connect the speakers to a reference amplifier with our preferred test tracks. With the speakers placed with proper distance we listen to each driver to make sure that they are producing the intended frequencies with no signs of distortion or rattle. During listening tests with test tracks we check for proper stereo imaging and bass response at various listening levels. If there are any audible signs of issues, the speakers are taken to the bench where we perform a frequency sweep to isolate the issue so that it can be resolved by component repair or replacement.

Our subwoofer evaluation process starts with a visual inspection of all drivers. We are looking for damaged or deteriorating woofer surrounds, cone damage, or rubbing voice coils. We also inspect the input connections for damage.

After the initial visual inspection, we connect the sub at our bench and perform a sine wave sweep from about 200Hz down to around 10Hz. During this sweep we are listening for excessive rattle or other signs of improper function. If the sweep passes, we then increase the input level to evaluate how the woofer performs at high output levels. If the woofer has built in crossover features or multiple connection options these features are tested at this time.

We complete the subwoofer evaluation by feeding the unit with an audio signal in conjunction with our house music system to see how it responds to low frequency content in real world conditions while paired with a full range system.