Signal Shop Currency Types
The Signal Shop in Zenless Zone Zero uses multiple currencies, each with its own acquisition method and optimal use case. Understanding what each currency does — and more importantly, what it should NOT be spent on — is the foundation of efficient account management.
| Currency | How to Obtain | Primary Use | Best Value | Do NOT Use For |
|---|---|---|---|---|
| Residual Signal | Pulling A-rank and S-rank Agents (duplicates refund Residual Signal) | Monthly refresh: Master Tapes & Encrypted Tapes | ⭐ Monthly tapes (highest pull-to-currency ratio) | A-rank Agent Cinemas unless you main that specific agent |
| Encrypted Signal | Pulling W-Engine duplicate copies (S-rank refunds 75, A-rank refunds 15) | Direct shop: S-rank W-Engines & A-rank W-Engines | ⭐ S-rank W-Engines for your core DPS characters | Over-refining S-rank W-Engines (W1 is enough for most characters) |
| Boopons | Hollow Zero, Battle Pass, Events, Monthly Pass | Bangboo Channel (dedicated Bangboo gacha banner) | ⭐ Saving for specific S-rank Bangboo rate-ups | Spending on standard Bangboo banner indiscriminately |
💡 Key Rule: Never convert Residual Signal to Encrypted Signal or vice versa. They are separate economies — Residual is for character-related pulls and tapes, Encrypted is for W-Engines. There is no conversion mechanic, and spending one on the other's domain is always suboptimal.
Monthly Refresh Items — Day 1 Priority
The monthly refresh in the Signal Shop resets every 30 days and offers the single best value for Residual Signal spending. These are the only items that convert Signal currency directly into pulls — everything else is a sidegrade or a luxury.
| Item | Cost (Residual Signal) | Quantity per Month | Value Rating | Strategy |
|---|---|---|---|---|
| Master Tape | 75 | 5 | ⭐ Essential | Buy first, always. 5 Master Tapes = 5 character event banner pulls. Cheaper than buying Polychrome pulls. 375 total Residuals for all 5. |
| Encrypted Tape | 75 | 5 | ⭐ Essential | Buy second if you pull for W-Engines. 5 Encrypted Tapes = 5 W-Engine event banner pulls. Total: 375 Residuals. |
| Standard Banner Tape | unavailable in shop | 0 | N/A | Standard banner tapes are not sold in the Signal Shop. Earn them through Battle Pass, events, and free log-in. |
The math is simple: 75 Residual Signal = 1 pull. Since 10-pulls cost 1,600 Polychrome (worth roughly $20 USD in paid currency), and 75 Residual Signal is earned from pulling roughly 15-20 A-rank dupes (which you accumulate naturally), the monthly refresh effectively doubles your pull economy over the course of a patch cycle. Never miss buying the 5 Master Tapes each month.
📊 Monthly Residual Signal Budget: An active F2P player who does 40-50 pulls per month on character banners will earn approximately 450-600 Residual Signal monthly (from A-rank dupe refunds at 8-12 signals per pull session). This is exactly enough for all 10 monthly tapes (5 Master + 5 Encrypted = 750 total). If you have leftover, save it for next month — do NOT spend it on other shop items until your tape stock is guaranteed.
S-Rank W-Engine vs Agent Cinema — What to Prioritize
This is the most common spending dilemma in the Encrypted Signal shop. Should you buy an S-rank W-Engine for your main DPS, or save for an Agent Cinema duplicate (mindscape)? The answer depends on your account stage and team needs:
| Scenario | Recommendation | Reasoning |
|---|---|---|
| New player (0-2 limited S-rank characters) | ✅ Save Encrypted Signals | You do not have enough dupes to generate meaningful Encrypted Signal. Focus on pulling for base copies of characters and build your roster first. |
| Mid-game (3-5 limited S-rank characters, no signature W-Engines) | ✅ S-rank W-Engine (750 Encrypted Signals) | A signature W-Engine for your primary DPS is a 20-30% damage increase. This is the single biggest upgrade path in the game at this stage. |
| Late-game (built teams, wants vertical investment) | ✅ Agent Cinema (1 copy = 480 Encrypted Signals) | C1 or C2 for your main carry often provides transformative gameplay changes or massive damage multipliers. Compare specific cinema effects before buying. |
| Whale / heavy spender | ✅ W-Engine refinements last | Only buy W-Engine refinements (W2-W5) after you have all the character Cinemas you want. Refinements are a 5-8% gain per level — nice but not transformative. |
💡 Pro Tip: S-rank W-Engines in the shop cost 750 Encrypted Signal. Agent Cinemas cost 480. But W-Engines are one-and-done — you buy it once and it's done. Cinemas require multiple copies to reach transformative breakpoints (usually C2 or C4). In most cases, buying one S-rank W-Engine is better value than buying one single Cinema copy. The exception is if a character's C1 is exceptionally powerful (e.g., C1 Burnice who gains a massive Afterburn damage multiplier).
Bangboo Signal Search (Bangboo Shop)
The Bangboo Signal Search is a dedicated gacha banner that uses Boopons — a separate currency that does NOT compete with Polychromes for your pull budget. This means every Boopon you earn is effectively "free" additional value that has no opportunity cost against character or W-Engine pulls.
Key Bangboo Shop Facts:
- Pity System: S-rank Bangboo guaranteed within 80 pulls. No 50/50 system — every S-rank is one of the featured Bangboo on rotation.
- Rotation: Two S-rank Bangboo are featured per rotation, changed every patch cycle.
- Pity Carries Over: Your Bangboo pity counter is permanent and carries between rotations.
- Duplicates: Pulling a duplicate Bangboo upgrades its Mindscape, enhancing the active skill effect.
📊 Bangboo Pull Priority (v2.8): Tier 1 (Game-changing): Resonaboo (for Ice/Frost teams), Rocketboo (for Fire teams). Tier 2 (Strong): Plugboo (Electric), Safety (survivability). Tier 3 (Situational): Avocaboo (Hollow Zero sustain), Magnetboo (grouping).
F2P Bangboo Strategy: As a F2P player, you earn roughly 30-40 Boopons per patch cycle. Save them until you have 80 (hard pity), then pull on a rotation that features an S-rank Bangboo your primary team needs. Do NOT spend Boopons on A-rank Bangboo — you will naturally get all A-ranks through free pulls over time. The worst mistake is spending 20-30 Boopons on every rotation: you end up with pity scattered across multiple banners and no guaranteed S-rank.
F2P vs Light Spender: Spending Priority
Your spending philosophy in the Signal Shop should align with your overall account investment level. Here is the definitive priority list for both F2P and light spenders:
| Priority | F2P Player | Light Spender (Monthly Pass + BP) | Notes |
|---|---|---|---|
| 1st | 5 Monthly Master Tapes (375 Residual) | 5 Monthly Master Tapes + 5 Encrypted Tapes (750 Residual) | Tapes convert directly to pulls. Non-negotiable monthly expense. |
| 2nd | Save excess Residual for next month | S-rank W-Engine from Encrypted Signal (750) | Light spenders generate more Residual and Encrypted Signal from more pulls. |
| 3rd | N/A (insufficient currency) | Agent Cinema for main DPS (480 per copy) | Only after securing top W-Engine for primary team. |
| 4th | N/A | A-rank W-Engine dupes (120 each) | Only for W-Engines like Demara Battery Mark II that want high refinement. |
| Never | Any non-tape shop item | A-rank Agent Cinemas from shop | You WILL max out all A-rank characters over time through natural gameplay. Spending Residual on A-rank dupes is a permanent loss. |
💡 F2P Golden Rule: If it costs Residual Signal and it's NOT a Master Tape or Encrypted Tape, do not buy it. Materials, Dennies, A-rank Cinemas — they are all traps. You can farm materials with stamina. A-rank character dupes come naturally from any banner pull. Only tapes are a finite, time-gated resource that directly translate to more limited banner pulls.
Long-Term Resource Planning
The Signal Shop is a marathon, not a sprint. Here is how to plan your shop spending across multiple patches to maximize your account power:
6-Month F2P Forecast: Over 6 months, a F2P player who does 40-50 pulls per patch will earn approximately 3,600-4,200 Residual Signal total. Buying the monthly tapes (750 per month = 4,500 over 6 months) means you will need to supplement with additional pulls — but the tapes themselves generate more pulls, which generate more Residual Signal. The system is self-sustaining once your banner pulling rate reaches about 50 pulls per month.
Light Spender 6-Month Plan: With monthly pass (Inter-Knot Membership) + BP (Grocery Store), you will average 70-80 pulls per patch. This generates more Residual and Encrypted Signal. Your 6-month plan should be: buy all monthly tapes every month (4,500 Residual), buy 1-2 S-rank W-Engines (750 each = 1,500 Encrypted), and consider 1-2 high-value Agent Cinemas (480 each = 960 Encrypted). This is achievable with consistent play.
When to Save vs When to Spend
- SAVE if you have fewer than 750 Residual Signal after buying monthly tapes. Always maintain a cushion for next month's refresh.
- SPEND (on W-Engines) when you have a solid 2-team roster for Shiyu Defense and lack signature W-Engines for your primary DPS.
- SAVE Encrypted Signal if a new character you plan to pull has a must-have W-Engine. Wait for it to arrive in the shop rotation.
- SPEND (on Cinemas) only when you have thoroughly checked the Cinemas benefit. Use community resources (Prydwen, ZZZ Guide tiers) to verify a Cinema's value before buying.
- NEVER SPEND Residual Signal on any material or Dennie pack. The exchange rate (e.g., 60 Signal for 10,000 Dennies) is terrible — one stamina run at max level gives you 24,000 Dennies for free.
Complete Shop Priority Cheat Sheet
| Category | Item | Cost | Priority | Frequency |
|---|---|---|---|---|
| Monthly (Residual) | Master Tape ×5 | 375 | ⭐ #1 | Every month |
| Monthly (Residual) | Encrypted Tape ×5 | 375 | ⭐ #2 | Every month (if you pull W-Engines) |
| Encrypted | S-rank W-Engine | 750 | 🔥 High | 1-2 per 6 months |
| Encrypted | Agent Cinema (S-rank) | 480 | 🟡 Medium | Only for high-value Cinemas |
| Encrypted | A-rank W-Engine | 120 | 🔵 Low | Only high-refinement targets |
| Residual | A-rank Agent Cinema | 80-120 | ❌ Never | — |
| Residual | Materials / Dennies | Variable | ❌ Never | — |